USPC Patent Classifications

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Class 178 telegraphy
uspcdescription
178/1178 telegraphy/(1) miscellaneous
178/2R178 telegraphy/(2r) systems
178/3178 telegraphy/(2r) systems (3) automatic
178/4178 telegraphy/(2r) systems (3) automatic (4) printing
178/4.1R178 telegraphy/(2r) systems (3) automatic (4) printing (4.1r) remote control
178/4.1A178 telegraphy/(2r) systems (3) automatic (4) printing (4.1r) remote control (4.1a) radio-controlled
178/4.1B178 telegraphy/(2r) systems (3) automatic (4) printing (4.1r) remote control (4.1b) called station identification answer back system
178/4.1C178 telegraphy/(2r) systems (3) automatic (4) printing (4.1r) remote control (4.1c) revertive signaling
178/15178 telegraphy/(2r) systems (3) automatic (15) photographic recorder
178/16178 telegraphy/(2r) systems (3) automatic (16) current reversing
178/17R178 telegraphy/(2r) systems (3) automatic (17r) transmitters or recorders
178/17.5178 telegraphy/(2r) systems (3) automatic (17r) transmitters or recorders (17.5) storing
178/17A178 telegraphy/(2r) systems (3) automatic (17r) transmitters or recorders (17a) tape and/or keyboard
178/17B178 telegraphy/(2r) systems (3) automatic (17r) transmitters or recorders (17b) tape control
178/17C178 telegraphy/(2r) systems (3) automatic (17r) transmitters or recorders (17c) keyboard
178/17D178 telegraphy/(2r) systems (3) automatic (17r) transmitters or recorders (17d) light, capacity, pneumatic sensing
178/17E178 telegraphy/(2r) systems (3) automatic (17r) transmitters or recorders (17e) overlap
178/18.01178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry)
178/18.02178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (18.02) error correction
178/18.03178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (18.03) writing digitizer pad
178/18.04178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (18.03) writing digitizer pad (18.04) acoustical (e.g., vibration, ultrasonic, etc.)
178/18.05178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (18.03) writing digitizer pad (18.05) resistive
178/18.06178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (18.03) writing digitizer pad (18.06) capacitive
178/18.07178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (18.03) writing digitizer pad (18.07) inductive
178/18.08178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (18.03) writing digitizer pad (18.07) inductive (18.08) having shield
178/18.09178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (18.03) writing digitizer pad (18.09) optical
178/18.11178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (18.03) writing digitizer pad (18.11) with illumination
178/19.01178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (19.01) writing digitizer stylus
178/19.02178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (19.01) writing digitizer stylus (19.02) acoustical stylus
178/19.03178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (19.01) writing digitizer stylus (19.03) capacitive or inductive stylus
178/19.04178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (19.01) writing digitizer stylus (19.04) pressure stylus
178/19.05178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (19.01) writing digitizer stylus (19.05) light pen
178/19.06178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (19.01) writing digitizer stylus (19.06) ac source
178/19.07178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (19.01) writing digitizer stylus (19.06) ac source (19.07) multifrequency
178/20.01178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (20.01) writing digitizer circuit
178/20.02178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (20.01) writing digitizer circuit (20.02) electrical filter or multiplexer
178/20.03178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (20.01) writing digitizer circuit (20.03) sampling circuit
178/20.04178 telegraphy/(2r) systems (18.01) position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) (20.01) writing digitizer circuit (20.04) phase detecting
178/21178 telegraphy/(2r) systems (21) stenographic
178/23R178 telegraphy/(2r) systems (23r) printing
178/24178 telegraphy/(2r) systems (23r) printing (24) bulletin
178/25178 telegraphy/(2r) systems (23r) printing (25) page
178/26.1178 telegraphy/(2r) systems (23r) printing (25) page (26.1) translators
178/27178 telegraphy/(2r) systems (23r) printing (25) page (27) selectors
178/28178 telegraphy/(2r) systems (23r) printing (25) page (28) with type-wheel recorder
178/29178 telegraphy/(2r) systems (23r) printing (25) page (28) with type-wheel recorder (29) recorders
178/30178 telegraphy/(2r) systems (23r) printing (30) character elements
178/31178 telegraphy/(2r) systems (23r) printing (31) multiple-line circuit
178/32178 telegraphy/(2r) systems (23r) printing (31) multiple-line circuit (32) with type-wheel recorder
178/33R178 telegraphy/(2r) systems (23r) printing (33r) selectors
178/34178 telegraphy/(2r) systems (23r) printing (33r) selectors (34) with type-wheel recorder
178/33MP178 telegraphy/(2r) systems (23r) printing (33r) selectors (33mp) monopulse
178/33A178 telegraphy/(2r) systems (23r) printing (33r) selectors (33a) double selectors
178/35178 telegraphy/(2r) systems (23r) printing (35) with type-wheel recorder
178/36178 telegraphy/(2r) systems (23r) printing (36) recorders
178/37178 telegraphy/(2r) systems (23r) printing (36) recorders (37) privacy (e.g., mechanical packaging or covering of printed message)
178/38178 telegraphy/(2r) systems (23r) printing (36) recorders (38) with type wheel
178/39178 telegraphy/(2r) systems (23r) printing (36) recorders (38) with type wheel (39) multiple
178/40178 telegraphy/(2r) systems (23r) printing (36) recorders (38) with type wheel (39) multiple (40) shifting devices
178/41178 telegraphy/(2r) systems (23r) printing (36) recorders (38) with type wheel (41) unisons
178/42178 telegraphy/(2r) systems (23r) printing (36) recorders (42) paper guiding or feeding
178/23A178 telegraphy/(2r) systems (23r) printing (23a) error detection in printers
178/43178 telegraphy/(2r) systems (43) space induction
178/45178 telegraphy/(2r) systems (45) loaded circuit
178/46178 telegraphy/(2r) systems (45) loaded circuit (46) loading coils
178/47178 telegraphy/(2r) systems (47) harmonic or reed
178/48178 telegraphy/(2r) systems (47) harmonic or reed (48) recorders and receivers
178/49178 telegraphy/(2r) systems (49) superposed current
178/62178 telegraphy/(2r) systems (62) chemical
178/63R178 telegraphy/(2r) systems (63r) cable or capacity
178/63A178 telegraphy/(2r) systems (63r) cable or capacity (63a) cable repeaters
178/63B178 telegraphy/(2r) systems (63r) cable or capacity (63b) cable transmitters
178/63C178 telegraphy/(2r) systems (63r) cable or capacity (63c) cable receivers
178/63D178 telegraphy/(2r) systems (63r) cable or capacity (63d) cable mechanical structure
178/63E178 telegraphy/(2r) systems (63r) cable or capacity (63e) distortion correction and artificial lines
178/63F178 telegraphy/(2r) systems (63r) cable or capacity (63f) direction reversing
178/64178 telegraphy/(2r) systems (64) coil transformer
178/65178 telegraphy/(2r) systems (65) dynamo
178/66.1178 telegraphy/(2r) systems (66.1) alternating or pulsating current
178/116178 telegraphy/(2r) systems (66.1) alternating or pulsating current (116) spark gap or arc discharge
178/117178 telegraphy/(2r) systems (66.1) alternating or pulsating current (117) coherer
178/66.2178 telegraphy/(2r) systems (66.1) alternating or pulsating current (66.2) transmitter keying
178/67.1178 telegraphy/(2r) systems (66.1) alternating or pulsating current (67.1) modified semicycle
178/69R178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance
178/69M178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69m) frequency measuring and compensating
178/69N178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69n) precorrectors
178/69A178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69a) distortion measuring
178/69B178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69b) interference neutralizing
178/69C178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69c) balancing duplex cables
178/69D178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69d) zero wander neutralizers
178/69E178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69e) leakage compensation
178/69F178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69f) neutralizing line capactive discharge
178/69G178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69g) monitoring, alarm and pilot signals
178/69H178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69h) reiterative
178/69K178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69k) misc. gas-filled tube circuits
178/69L178 telegraphy/(2r) systems (69r) line-clearing and circuit maintenance (69l) check back
178/69.6178 telegraphy/(2r) systems (69.6) call
178/2A178 telegraphy/(2r) systems (2a) simplex-reversing periodic
178/2B178 telegraphy/(2r) systems (2b) code changers
178/2C178 telegraphy/(2r) systems (2c) way stations; party lines
178/2D178 telegraphy/(2r) systems (2d) round robins
178/2E178 telegraphy/(2r) systems (2e) satellite
178/2F178 telegraphy/(2r) systems (2f) coin-controlled, connecting, recording
178/70R178 telegraphy/(70r) repeaters
178/71.1178 telegraphy/(70r) repeaters (71.1) automatic in either direction
178/72178 telegraphy/(70r) repeaters (71.1) automatic in either direction (72) mechanical circuit retainer
178/73178 telegraphy/(70r) repeaters (71.1) automatic in either direction (73) multiple line
178/71.2178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.2) distributor
178/71.3178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.3) mechanical
178/71.4178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.4) generator
178/71.5178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.5) artificial line and relay
178/71.6178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.6) vacuum tube and gas magnetron
178/71.7178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.7) code transformer
178/71.8178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.8) oscillatory
178/71.9178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.9) one-way repeater switched
178/71.11178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.11) piezoelectric
178/71.12178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.12) vacuum tube and relay
178/71.13178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.13) relay only
178/71.14178 telegraphy/(70r) repeaters (71.1) automatic in either direction (71.14) supervisory, alarm, monitor
178/70A178 telegraphy/(70r) repeaters (70a) relays only
178/70B178 telegraphy/(70r) repeaters (70b) vibrating relays
178/70C178 telegraphy/(70r) repeaters (70c) rotary distributors
178/70D178 telegraphy/(70r) repeaters (70d) mechanical
178/70E178 telegraphy/(70r) repeaters (70e) tuning forks
178/70F178 telegraphy/(70r) repeaters (70f) vacuum tubes
178/70G178 telegraphy/(70r) repeaters (70f) vacuum tubes (70g) with rotary distributors
178/70H178 telegraphy/(70r) repeaters (70h) gas tubes
178/70K178 telegraphy/(70r) repeaters (70h) gas tubes (70k) and distributors
178/70M178 telegraphy/(70r) repeaters (70m) magnetic
178/70N178 telegraphy/(70r) repeaters (70n) magnetron repeaters
178/70P178 telegraphy/(70r) repeaters (70p) photocell
178/70Q178 telegraphy/(70r) repeaters (70q) piezoelectric
178/70J178 telegraphy/(70r) repeaters (70j) generator
178/70S178 telegraphy/(70r) repeaters (70s) having a carrier wave input
178/70T178 telegraphy/(70r) repeaters (70t) oscillatory
178/70TS178 telegraphy/(70r) repeaters (70ts) using transistors
178/74178 telegraphy/(74) circuits
178/75178 telegraphy/(74) circuits (75) manipulating switch
178/76178 telegraphy/(74) circuits (76) retarded closer
178/77178 telegraphy/(77) combined instruments
178/78178 telegraphy/(77) combined instruments (78) portable sets
178/79178 telegraphy/(79) code transmitters
178/80178 telegraphy/(79) code transmitters (80) combined instruments
178/81178 telegraphy/(79) code transmitters (80) combined instruments (81) with typewriter
178/82R178 telegraphy/(79) code transmitters (82r) automatic dot
178/82B178 telegraphy/(79) code transmitters (82r) automatic dot (82b) with electromagnet
178/82A178 telegraphy/(79) code transmitters (82r) automatic dot (82a) and dash
178/83178 telegraphy/(79) code transmitters (83) rotary contact
178/84178 telegraphy/(79) code transmitters (83) rotary contact (84) drum
178/85178 telegraphy/(79) code transmitters (85) oscillating contact
178/86178 telegraphy/(79) code transmitters (86) reciprocating contact
178/118178 telegraphy/(118) receivers
178/89178 telegraphy/(118) receivers (89) code recorders
178/90178 telegraphy/(118) receivers (89) code recorders (90) photographic
178/91178 telegraphy/(118) receivers (89) code recorders (91) siphon
178/92178 telegraphy/(118) receivers (89) code recorders (92) indenting or perforating
178/93178 telegraphy/(118) receivers (89) code recorders (93) polarized
178/94178 telegraphy/(118) receivers (89) code recorders (94) pyrographic
178/95178 telegraphy/(118) receivers (89) code recorders (95) stop mechanisms
178/96178 telegraphy/(118) receivers (89) code recorders (96) inking devices
178/97178 telegraphy/(118) receivers (89) code recorders (97) double-tape movement
178/98178 telegraphy/(118) receivers (98) sounders
178/99.1178 telegraphy/(118) receivers (98) sounders (99.1) private (e.g., acoustically shielded)
178/100178 telegraphy/(118) receivers (98) sounders (100) augmenting
178/119178 telegraphy/(118) receivers (119) optical member
178/120178 telegraphy/(118) receivers (120) with electron tube or solid-state device
178/101178 telegraphy/(101) keys
178/102178 telegraphy/(101) keys (102) multiple contact
178/103178 telegraphy/(101) keys (103) multiple line
178/104178 telegraphy/(101) keys (104) self-closing
178/105178 telegraphy/(101) keys (105) reversible
178/106178 telegraphy/(101) keys (106) shifting contact point
178/107178 telegraphy/(101) keys (107) knife-edge pivot
178/108178 telegraphy/(101) keys (108) horizontal swing
178/109178 telegraphy/(101) keys (109) spring pivot
178/110178 telegraphy/(101) keys (110) finger buttons
178/111178 telegraphy/(111) tapes
178/112178 telegraphy/(111) tapes (112) perforated
178/114178 telegraphy/(114) instrument tables
178/115178 telegraphy/(115) learners' instruments

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