USPC Patent Classifications

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Class 454 ventilation
uspcdescription
454/1454 ventilation/(1) chimney or stack
454/2454 ventilation/(1) chimney or stack (2) vehicle
454/3454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl)
454/4454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (4) cap closure
454/5454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (4) cap closure (5) pivoted
454/6454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (4) cap closure (5) pivoted (6) plural, separately pivoted portions
454/7454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (4) cap closure (5) pivoted (7) having remote control
454/8454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (8) inlet and outlet
454/9454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (8) inlet and outlet (9) having air current responsive adjustment means (e.g., wind vane, etc.)
454/10454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (10) inlet
454/11454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (10) inlet (11) having air current responsive adjustment means (e.g., wind vane, etc.)
454/12454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (12) with means for mounting on brick-type chimney
454/13454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (12) with means for mounting on brick-type chimney (13) chimneytop structure extends within chimney
454/14454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (12) with means for mounting on brick-type chimney (13) chimneytop structure extends within chimney (14) means for mounting to inner wall
454/15454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (15) with rotary means in air current (e.g., fan, etc.)
454/16454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (15) with rotary means in air current (e.g., fan, etc.) (16) driven by external power source
454/17454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (15) with rotary means in air current (e.g., fan, etc.) (17) having air current responsive adjustment means (e.g., wind vane, etc.)
454/18454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (15) with rotary means in air current (e.g., fan, etc.) (18) cage-type blade set
454/19454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (15) with rotary means in air current (e.g., fan, etc.) (18) cage-type blade set (19) including additional blade set
454/20454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (20) having air current responsive adjustment means
454/21454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (20) having air current responsive adjustment means (21) wind vane
454/22454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (20) having air current responsive adjustment means (21) wind vane (22) with air current inducing jet
454/23454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (20) having air current responsive adjustment means (21) wind vane (22) with air current inducing jet (23) centered within induced air current
454/24454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (20) having air current responsive adjustment means (21) wind vane (24) shield
454/25454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (20) having air current responsive adjustment means (21) wind vane (25) hood having outlet opening perpendicular to wind
454/26454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (20) having air current responsive adjustment means (26) current regulator
454/27454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (27) having readily movable air current regulating means
454/28454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (27) having readily movable air current regulating means (28) with temperature sensitive release
454/29454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (27) having readily movable air current regulating means (29) continuously horizontal panel
454/30454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (27) having readily movable air current regulating means (30) pivoted
454/31454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (27) having readily movable air current regulating means (30) pivoted (31) plural
454/32454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (32) t-top
454/33454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (33) spiral or plural stacked rings
454/34454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (34) four-side outlets with shield
454/35454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (35) spaced cap
454/36454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (35) spaced cap (36) and spaced shield
454/37454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (35) spaced cap (36) and spaced shield (37) and skirt deflector extending outwardly from chimney or stack
454/38454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (35) spaced cap (38) and skirt deflector extending outwardly from chimney or stack
454/39454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (39) having air current inducing jet
454/40454 ventilation/(1) chimney or stack (3) chimneytop or stacktop structure (e.g., cowl) (39) having air current inducing jet (40) plural, in-series jets
454/41454 ventilation/(1) chimney or stack (41) having liquid drain
454/42454 ventilation/(1) chimney or stack (42) having internal air current guide
454/43454 ventilation/(1) chimney or stack (43) having flue heater
454/44454 ventilation/(1) chimney or stack (44) having lining or sleeve
454/45454 ventilation/(1) chimney or stack (44) having lining or sleeve (45) including breech opening
454/46454 ventilation/(1) chimney or stack (44) having lining or sleeve (46) pressurized air lining
454/47454 ventilation/(1) chimney or stack (44) having lining or sleeve (47) axially connected chimney or stack sections
454/48454 ventilation/(48) exterior vault or manhole cover
454/49454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.)
454/50454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (50) spray booth
454/51454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (50) spray booth (51) having air inlet separate from access opening
454/52454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (50) spray booth (51) having air inlet separate from access opening (52) ceiling inlet
454/53454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (50) spray booth (53) with outlet air treatment means
454/54454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (50) spray booth (53) with outlet air treatment means (54) with means for liquid contact
454/55454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (50) spray booth (53) with outlet air treatment means (54) with means for liquid contact (55) spraying nozzle
454/56454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (56) covered workbench chamber (e.g., fume hood, etc.)
454/57454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (56) covered workbench chamber (e.g., fume hood, etc.) (57) having air inlet separate from access opening
454/58454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (56) covered workbench chamber (e.g., fume hood, etc.) (57) having air inlet separate from access opening (58) including flow adjustment means
454/59454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (56) covered workbench chamber (e.g., fume hood, etc.) (57) having air inlet separate from access opening (58) including flow adjustment means (59) responsive to position of access door
454/60454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (56) covered workbench chamber (e.g., fume hood, etc.) (57) having air inlet separate from access opening (60) and air outlet through access opening
454/61454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (56) covered workbench chamber (e.g., fume hood, etc.) (61) having outlet airway flow adjustment means
454/62454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (56) covered workbench chamber (e.g., fume hood, etc.) (61) having outlet airway flow adjustment means (62) plural airways with adjustable distribution means
454/63454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (63) movable
454/64454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (63) movable (64) having sliding, communication, airway duct sections
454/65454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (63) movable (65) having canopy exhaust hood
454/66454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (66) having inlet airway
454/67454 ventilation/(49) workstation ventilator (e.g., hood, offtake, etc.) (67) having canopy exhaust hood
454/68454 ventilation/(68) elevator
454/69454 ventilation/(69) vehicle (e.g., automobile, etc.)
454/70454 ventilation/(69) vehicle (e.g., automobile, etc.) (70) pressure regulation
454/71454 ventilation/(69) vehicle (e.g., automobile, etc.) (70) pressure regulation (71) ventilation of aircraft cabin
454/72454 ventilation/(69) vehicle (e.g., automobile, etc.) (70) pressure regulation (71) ventilation of aircraft cabin (72) auxiliary control system
454/73454 ventilation/(69) vehicle (e.g., automobile, etc.) (70) pressure regulation (71) ventilation of aircraft cabin (73) mechanical operation of control system (e.g., by bellows or diaphragm, etc.)
454/74454 ventilation/(69) vehicle (e.g., automobile, etc.) (70) pressure regulation (71) ventilation of aircraft cabin (74) control system having electrical or electronic component
454/75454 ventilation/(69) vehicle (e.g., automobile, etc.) (75) having automatic control means
454/76454 ventilation/(69) vehicle (e.g., automobile, etc.) (76) aircraft
454/77454 ventilation/(69) vehicle (e.g., automobile, etc.) (76) aircraft (77) freight
454/78454 ventilation/(69) vehicle (e.g., automobile, etc.) (78) waterborne
454/79454 ventilation/(69) vehicle (e.g., automobile, etc.) (78) waterborne (79) freight
454/80454 ventilation/(69) vehicle (e.g., automobile, etc.) (78) waterborne (79) freight (80) nonperishable bulk foodstuff (e.g., grain ship)
454/81454 ventilation/(69) vehicle (e.g., automobile, etc.) (78) waterborne (81) porthole ventilator
454/82454 ventilation/(69) vehicle (e.g., automobile, etc.) (78) waterborne (82) with moisture deflector or drain
454/83454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer
454/84454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (84) locomotive cab
454/85454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (84) locomotive cab (85) condensation preventer (e.g., defroster, etc.)
454/86454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (84) locomotive cab (86) including dust guard for cab window opening
454/87454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (87) sleeping car
454/88454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (88) freight
454/89454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (88) freight (89) ice-bunker closure (e.g., for refrigerated railcar)
454/90454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (88) freight (90) refrigerated or heated
454/91454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (88) freight (90) refrigerated or heated (91) with air pump
454/92454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (88) freight (92) with air pump
454/93454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (93) condensation preventer (e.g., defroster, etc.)
454/94454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (94) having exterior cap closure for vent
454/95454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (95) having window or entry-door ventilation structure
454/96454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (95) having window or entry-door ventilation structure (96) including dust guard for window opening
454/97454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (95) having window or entry-door ventilation structure (96) including dust guard for window opening (97) inside of window
454/98454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (95) having window or entry-door ventilation structure (96) including dust guard for window opening (98) outside of window
454/99454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (99) having forced recirculation
454/100454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (99) having forced recirculation (100) having forced recirulation means alone
454/101454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (99) having forced recirculation (100) having forced recirulation means alone (101) wind-operated fan
454/102454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (99) having forced recirculation (100) having forced recirulation means alone (102) wheel-axle operated fan
454/103454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (103) having both inlet and outlet airways
454/104454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (103) having both inlet and outlet airways (104) including unitary inlet and outlet housing
454/105454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (103) having both inlet and outlet airways (105) with air pump
454/106454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (103) having both inlet and outlet airways (105) with air pump (106) wind or wheel-axle operated
454/107454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (107) having inlet airway
454/108454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (107) having inlet airway (108) including specific air distributor
454/109454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (107) having inlet airway (108) including specific air distributor (109) having adjustable deflector
454/110454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (107) having inlet airway (110) liquid contact
454/111454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (107) having inlet airway (111) with deflecting separator-type filter
454/112454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (107) having inlet airway (112) with air pump
454/113454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (107) having inlet airway (112) with air pump (113) wind operated
454/114454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (107) having inlet airway (112) with air pump (114) wheel-axle operated
454/115454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (115) having outlet airway
454/116454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (115) having outlet airway (116) with current inducing jet
454/117454 ventilation/(69) vehicle (e.g., automobile, etc.) (83) railcar, bus, or trailer (115) having outlet airway (117) with air pump (e.g., wind or wheel-axle operated, etc.)
454/118454 ventilation/(69) vehicle (e.g., automobile, etc.) (118) freight
454/119454 ventilation/(69) vehicle (e.g., automobile, etc.) (119) having external connection
454/120454 ventilation/(69) vehicle (e.g., automobile, etc.) (120) seat structure
454/121454 ventilation/(69) vehicle (e.g., automobile, etc.) (121) condensation preventer (e.g., defroster, etc.)
454/122454 ventilation/(69) vehicle (e.g., automobile, etc.) (121) condensation preventer (e.g., defroster, etc.) (122) air directed between double paned window
454/123454 ventilation/(69) vehicle (e.g., automobile, etc.) (121) condensation preventer (e.g., defroster, etc.) (123) air directed at window exterior
454/124454 ventilation/(69) vehicle (e.g., automobile, etc.) (121) condensation preventer (e.g., defroster, etc.) (124) side or rear window
454/125454 ventilation/(69) vehicle (e.g., automobile, etc.) (121) condensation preventer (e.g., defroster, etc.) (125) having sweeping air distributor
454/126454 ventilation/(69) vehicle (e.g., automobile, etc.) (121) condensation preventer (e.g., defroster, etc.) (126) having means for combining heated and unheated air
454/127454 ventilation/(69) vehicle (e.g., automobile, etc.) (121) condensation preventer (e.g., defroster, etc.) (127) having dashboard air distributor (e.g., for windshield, etc.)
454/128454 ventilation/(69) vehicle (e.g., automobile, etc.) (128) means for open window (e.g., deflector, etc.)
454/129454 ventilation/(69) vehicle (e.g., automobile, etc.) (128) means for open window (e.g., deflector, etc.) (129) sunroof
454/130454 ventilation/(69) vehicle (e.g., automobile, etc.) (128) means for open window (e.g., deflector, etc.) (130) windshield or rear window
454/131454 ventilation/(69) vehicle (e.g., automobile, etc.) (128) means for open window (e.g., deflector, etc.) (131) at upper edge of sliding window
454/132454 ventilation/(69) vehicle (e.g., automobile, etc.) (128) means for open window (e.g., deflector, etc.) (131) at upper edge of sliding window (132) having means to selectively adjust airflow
454/133454 ventilation/(69) vehicle (e.g., automobile, etc.) (128) means for open window (e.g., deflector, etc.) (131) at upper edge of sliding window (133) having plural air passages
454/134454 ventilation/(69) vehicle (e.g., automobile, etc.) (128) means for open window (e.g., deflector, etc.) (134) pivoted window
454/135454 ventilation/(69) vehicle (e.g., automobile, etc.) (128) means for open window (e.g., deflector, etc.) (135) adjacent front edge of window
454/136454 ventilation/(69) vehicle (e.g., automobile, etc.) (136) roof structure
454/137454 ventilation/(69) vehicle (e.g., automobile, etc.) (136) roof structure (137) including duct extending along roof
454/138454 ventilation/(69) vehicle (e.g., automobile, etc.) (136) roof structure (137) including duct extending along roof (138) having exterior inlet opening over windshield
454/139454 ventilation/(69) vehicle (e.g., automobile, etc.) (139) having forced recirculation
454/140454 ventilation/(69) vehicle (e.g., automobile, etc.) (139) having forced recirculation (140) forced recirculation alone or agitating fan
454/141454 ventilation/(69) vehicle (e.g., automobile, etc.) (141) having both inlet and outlet airways
454/142454 ventilation/(69) vehicle (e.g., automobile, etc.) (141) having both inlet and outlet airways (142) including unitary inlet and outlet housing
454/143454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway
454/144454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (144) including duct extending along floor
454/145454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (145) selective inlet, outlet, and closure
454/146454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (146) including exterior cowl inlet
454/147454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (146) including exterior cowl inlet (147) with moisture deflector or drain
454/148454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (146) including exterior cowl inlet (148) ducting to heat exchanger
454/149454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (146) including exterior cowl inlet (149) having exterior door
454/150454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (150) including exterior windshield inlet
454/151454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (151) including exterior rear or rear-side inlet
454/152454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (152) including specific air distributor
454/153454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (152) including specific air distributor (153) sweeping type
454/154454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (152) including specific air distributor (154) having swiveling nozzle
454/155454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (152) including specific air distributor (155) having adjustable deflector
454/156454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (156) with air treatment means
454/157454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (156) with air treatment means (157) liquid contact
454/158454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (156) with air treatment means (158) porous filter
454/159454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (156) with air treatment means (159) heating
454/160454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (156) with air treatment means (159) heating (160) having means for combining heated and unheated air
454/161454 ventilation/(69) vehicle (e.g., automobile, etc.) (143) having inlet airway (156) with air treatment means (159) heating (161) having heat exchange core
454/162454 ventilation/(69) vehicle (e.g., automobile, etc.) (162) having outlet airway
454/163454 ventilation/(69) vehicle (e.g., automobile, etc.) (162) having outlet airway (163) with current inducing jet
454/164454 ventilation/(69) vehicle (e.g., automobile, etc.) (162) having outlet airway (164) exterior side outlet
454/165454 ventilation/(69) vehicle (e.g., automobile, etc.) (162) having outlet airway (165) exterior rear outlet
454/166454 ventilation/(166) vehicular tunnel
454/167454 ventilation/(166) vehicular tunnel (167) with air pump
454/168454 ventilation/(168) mine
454/169454 ventilation/(168) mine (169) with partition means (e.g., brattice, etc.)
454/170454 ventilation/(168) mine (169) with partition means (e.g., brattice, etc.) (170) flexible sheet
454/171454 ventilation/(168) mine (171) having inlet and outlet ductwork
454/172454 ventilation/(168) mine (172) having inlet ductwork
454/173454 ventilation/(173) storage area for perishables
454/174454 ventilation/(173) storage area for perishables (174) harvested crop ventilation
454/175454 ventilation/(173) storage area for perishables (174) harvested crop ventilation (175) having perforated or slotted duct contacting crop
454/176454 ventilation/(173) storage area for perishables (174) harvested crop ventilation (175) having perforated or slotted duct contacting crop (176) including insertion means
454/177454 ventilation/(173) storage area for perishables (174) harvested crop ventilation (175) having perforated or slotted duct contacting crop (177) horizontal and vertical perforated or slotted ducts
454/178454 ventilation/(173) storage area for perishables (174) harvested crop ventilation (175) having perforated or slotted duct contacting crop (177) horizontal and vertical perforated or slotted ducts (178) with air pump
454/179454 ventilation/(173) storage area for perishables (174) harvested crop ventilation (175) having perforated or slotted duct contacting crop (179) horizontal duct
454/180454 ventilation/(173) storage area for perishables (174) harvested crop ventilation (175) having perforated or slotted duct contacting crop (179) horizontal duct (180) with air pump
454/181454 ventilation/(173) storage area for perishables (174) harvested crop ventilation (175) having perforated or slotted duct contacting crop (181) with air pump
454/182454 ventilation/(173) storage area for perishables (174) harvested crop ventilation (182) granular crop or corn ears
454/183454 ventilation/(173) storage area for perishables (183) provision safe
454/184454 ventilation/(184) electronic cabinet
454/185454 ventilation/(185) hollow partition
454/186454 ventilation/(185) hollow partition (186) having blower
454/187454 ventilation/(187) clean room
454/188454 ventilation/(188) having protecting air current
454/189454 ventilation/(188) having protecting air current (189) surrounding protected area
454/190454 ventilation/(188) having protecting air current (190) including plural, layered currents
454/191454 ventilation/(188) having protecting air current (191) including suction outlet
454/192454 ventilation/(188) having protecting air current (192) including current adjusting mean
454/193454 ventilation/(188) having protecting air current (193) cabinet enclosure (e.g., display case, etc.)
454/194454 ventilation/(194) blast or shock wave prevention
454/195454 ventilation/(195) means combined with door
454/196454 ventilation/(196) means combined with window
454/197454 ventilation/(196) means combined with window (197) for bed or couch
454/198454 ventilation/(196) means combined with window (198) condensation preventer
454/199454 ventilation/(196) means combined with window (199) skylight
454/200454 ventilation/(196) means combined with window (200) with air pump
454/201454 ventilation/(196) means combined with window (200) with air pump (201) cooling air conditioner
454/202454 ventilation/(196) means combined with window (200) with air pump (201) cooling air conditioner (202) having readily moveable flow control means
454/203454 ventilation/(196) means combined with window (200) with air pump (201) cooling air conditioner (203) with extensible side panel
454/204454 ventilation/(196) means combined with window (200) with air pump (201) cooling air conditioner (204) with mounting or support means
454/205454 ventilation/(196) means combined with window (200) with air pump (205) recirculation means
454/206454 ventilation/(196) means combined with window (200) with air pump (206) with specific noise inhibiting structure
454/207454 ventilation/(196) means combined with window (200) with air pump (207) with specific filtering means
454/208454 ventilation/(196) means combined with window (200) with air pump (208) propeller fan having rotary axis perpendicular to window
454/209454 ventilation/(196) means combined with window (200) with air pump (208) propeller fan having rotary axis perpendicular to window (209) with mounting means for pump reversal
454/210454 ventilation/(196) means combined with window (200) with air pump (208) propeller fan having rotary axis perpendicular to window (210) with extensible side panel
454/211454 ventilation/(196) means combined with window (211) having air passage in sash
454/212454 ventilation/(196) means combined with window (212) having air passage means within, attaching to, or replacing pane
454/213454 ventilation/(196) means combined with window (213) having air passage at window top
454/214454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash
454/215454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash (215) including wall sloping downward from window
454/216454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash (216) including wall for upwardly deflecting inlet air
454/217454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash (216) including wall for upwardly deflecting inlet air (217) having adjustable angle or swingable mounting
454/218454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash (216) including wall for upwardly deflecting inlet air (217) having adjustable angle or swingable mounting (218) including collapsible or flexible, perpendicular side wall
454/219454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash (216) including wall for upwardly deflecting inlet air (219) having readily moveable air regulating means
454/220454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash (216) including wall for upwardly deflecting inlet air (220) having slidably interconnected sections
454/221454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash (221) including louvers
454/222454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash (222) including readily moveable air regulating means
454/223454 ventilation/(196) means combined with window (214) having air passage between sill and bottom of sash (223) with means for liquid contact
454/224454 ventilation/(196) means combined with window (224) having louvers
454/225454 ventilation/(196) means combined with window (225) tilting pane window
454/226454 ventilation/(196) means combined with window (226) having wind deflector
454/227454 ventilation/(196) means combined with window (227) including backdraft preventer
454/228454 ventilation/(228) having forced recirculation
454/229454 ventilation/(228) having forced recirculation (229) including automatic control means
454/230454 ventilation/(228) having forced recirculation (230) forced recirculation alone
454/231454 ventilation/(228) having forced recirculation (230) forced recirculation alone (231) having recirculating duct connecting upper and lower room air strata
454/232454 ventilation/(228) having forced recirculation (230) forced recirculation alone (232) having plural or branched recirculation ducts
454/233454 ventilation/(228) having forced recirculation (230) forced recirculation alone (233) for use with heating or cooling means
454/234454 ventilation/(228) having forced recirculation (234) including unitary housing having both inlet and outlet airways
454/235454 ventilation/(228) having forced recirculation (234) including unitary housing having both inlet and outlet airways (235) having air pump means for both airways
454/236454 ventilation/(228) having forced recirculation (236) for use with heating and cooling means
454/237454 ventilation/(237) having both inlet and outlet airways
454/238454 ventilation/(237) having both inlet and outlet airways (238) pressure regulation
454/239454 ventilation/(237) having both inlet and outlet airways (239) including automatic control means
454/240454 ventilation/(237) having both inlet and outlet airways (240) with wind-operated air pump
454/241454 ventilation/(237) having both inlet and outlet airways (241) including unitary inlet and outlet housing
454/242454 ventilation/(237) having both inlet and outlet airways (241) including unitary inlet and outlet housing (242) rooftop
454/243454 ventilation/(237) having both inlet and outlet airways (241) including unitary inlet and outlet housing (243) sleeved vent for ceiling, wall, or floor (e.g., thimble)
454/244454 ventilation/(237) having both inlet and outlet airways (241) including unitary inlet and outlet housing (243) sleeved vent for ceiling, wall, or floor (e.g., thimble) (244) with air pump means for both inlet and outlet airways
454/245454 ventilation/(237) having both inlet and outlet airways (241) including unitary inlet and outlet housing (245) air distributor with return vent (e.g., register, etc.)
454/246454 ventilation/(237) having both inlet and outlet airways (241) including unitary inlet and outlet housing (245) air distributor with return vent (e.g., register, etc.) (246) baseboard type
454/247454 ventilation/(237) having both inlet and outlet airways (241) including unitary inlet and outlet housing (245) air distributor with return vent (e.g., register, etc.) (247) floor type
454/248454 ventilation/(237) having both inlet and outlet airways (241) including unitary inlet and outlet housing (245) air distributor with return vent (e.g., register, etc.) (248) ceiling type
454/249454 ventilation/(237) having both inlet and outlet airways (241) including unitary inlet and outlet housing (249) with air pump
454/250454 ventilation/(237) having both inlet and outlet airways (250) natural ventilation including air passage through rooftop (i.e., no air pump)
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