Class 331 oscillators | |
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uspc | description |
331/94.1 | 331 oscillators/(94.1) molecular or particle resonant type (e.g., maser) |
331/1R | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means |
331/2 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (2) plural oscillators controlled |
331/3 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (3) molecular resonance stabilization |
331/4 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (4) search sweep of oscillator |
331/5 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (5) magnetron oscillator |
331/6 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (6) klystron oscillator |
331/7 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (6) klystron oscillator (7) plural controls |
331/8 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (8) transistorized controls |
331/9 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (9) oscillator with distributed parameter-type discriminator |
331/10 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (10) plural a.f.s. for a single oscillator |
331/11 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (10) plural a.f.s. for a single oscillator (11) plural comparators or discriminators |
331/12 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (10) plural a.f.s. for a single oscillator (11) plural comparators or discriminators (12) with phase-shifted inputs |
331/13 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (10) plural a.f.s. for a single oscillator (13) motor control of oscillator |
331/14 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (14) with intermittent comparison controls |
331/15 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (15) amplitude compensation |
331/16 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (16) tuning compensation |
331/17 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (17) particular error voltage control (e.g., intergrating network) |
331/18 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source |
331/19 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (19) spectrum reference source |
331/20 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (20) t.v. sync type |
331/21 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (20) t.v. sync type (21) lock to power line |
331/22 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (22) plural significant heterodyne stages |
331/23 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (23) sensing modulation (e.g., frequency modulation controlled oscillator |
331/24 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (23) sensing modulation (e.g., frequency modulation controlled oscillator (24) with motor comparator |
331/25 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (25) signal or phase comparator |
331/26 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (25) signal or phase comparator (26) plural diode type |
331/27 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (25) signal or phase comparator (27) plural active element (e.g., triodes) |
331/28 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (25) signal or phase comparator (28) unilateral element (e.g., diode) |
331/29 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (18) with reference oscillator or source (25) signal or phase comparator (29) electromechanical |
331/30 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (30) with stable heterodyne oscillator or source |
331/31 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (30) with stable heterodyne oscillator or source (31) plural significant heterodyne stages |
331/32 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (30) with stable heterodyne oscillator or source (32) with particular discriminator (e.g., lpf and hpf) |
331/33 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (30) with stable heterodyne oscillator or source (32) with particular discriminator (e.g., lpf and hpf) (33) plural diode type |
331/34 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (34) particular frequency control means |
331/35 | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (34) particular frequency control means (35) electromechanical (e.g., motor) |
331/36R | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (34) particular frequency control means (36r) reactance device (e.g., variable capacitors, saturable inductors, reactance tubes, etc.) |
331/36C | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (34) particular frequency control means (36r) reactance device (e.g., variable capacitors, saturable inductors, reactance tubes, etc.) (36c) capacitor controlled afc |
331/36L | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (34) particular frequency control means (36r) reactance device (e.g., variable capacitors, saturable inductors, reactance tubes, etc.) (36l) inductor controlled afc |
331/1A | 331 oscillators/(1r) automatic frequency stabilization using a phase or frequency sensing means (1a) afc with logic elements |
331/37 | 331 oscillators/(37) beat frequency |
331/38 | 331 oscillators/(37) beat frequency (38) plural beating |
331/39 | 331 oscillators/(37) beat frequency (38) plural beating (39) single channel |
331/40 | 331 oscillators/(37) beat frequency (40) frequency or amplitude adjustment or control |
331/41 | 331 oscillators/(37) beat frequency (41) frequency stabilization |
331/42 | 331 oscillators/(37) beat frequency (42) with particular signal combining means (e.g., cavity mixer) |
331/43 | 331 oscillators/(37) beat frequency (42) with particular signal combining means (e.g., cavity mixer) (43) with filter in mixer output circuit |
331/44 | 331 oscillators/(44) with frequency calibration or testing |
331/45 | 331 oscillators/(45) polyphase output |
331/46 | 331 oscillators/(46) plural oscillators |
331/47 | 331 oscillators/(46) plural oscillators (47) oscillator used to vary amplitude or frequency of another oscillator |
331/48 | 331 oscillators/(46) plural oscillators (48) adjustable frequency |
331/49 | 331 oscillators/(46) plural oscillators (49) selectively connected to common output or oscillator substitution |
331/50 | 331 oscillators/(46) plural oscillators (50) cascade or tandem connected |
331/51 | 331 oscillators/(46) plural oscillators (50) cascade or tandem connected (51) frequency dividers |
331/52 | 331 oscillators/(46) plural oscillators (50) cascade or tandem connected (52) semiconductor (e.g., transistor) |
331/53 | 331 oscillators/(46) plural oscillators (50) cascade or tandem connected (53) frequency multiplier |
331/54 | 331 oscillators/(46) plural oscillators (50) cascade or tandem connected (54) diverse-type oscillators |
331/55 | 331 oscillators/(46) plural oscillators (55) synchronized, triggered or pulsed |
331/56 | 331 oscillators/(46) plural oscillators (56) parallel connected |
331/57 | 331 oscillators/(57) ring oscillators |
331/58 | 331 oscillators/(58) plural functions simultaneously |
331/59 | 331 oscillators/(59) convertible (e.g., oscillator to amplifier, etc.) |
331/60 | 331 oscillators/(60) single oscillator with plural output circuits |
331/61 | 331 oscillators/(60) single oscillator with plural output circuits (61) plural outputs of diverse wave form |
331/62 | 331 oscillators/(62) with oscillator circuit protective means |
331/63 | 331 oscillators/(63) protective of safety devices for personnel |
331/64 | 331 oscillators/(64) with indicator, signal, or alarm |
331/65 | 331 oscillators/(65) with device responsive to external physical condition |
331/66 | 331 oscillators/(65) with device responsive to external physical condition (66) temperature or light responsive |
331/67 | 331 oscillators/(67) with electromagnetic or electrostatic shield |
331/68 | 331 oscillators/(68) with outer casing or housing |
331/69 | 331 oscillators/(68) with outer casing or housing (69) with temperature modifier |
331/70 | 331 oscillators/(70) with temperature modifier |
331/71 | 331 oscillators/(71) raw a.c. used as source of power or bias |
331/72 | 331 oscillators/(72) electron-coupled type |
331/73 | 331 oscillators/(72) electron-coupled type (73) piezoelectric crystal resonator |
331/74 | 331 oscillators/(74) combined with particular output coupling network |
331/75 | 331 oscillators/(74) combined with particular output coupling network (75) space discharge or unilaterally conductive device in output network |
331/76 | 331 oscillators/(74) combined with particular output coupling network (75) space discharge or unilaterally conductive device in output network (76) harmonic producing or selecting network |
331/77 | 331 oscillators/(74) combined with particular output coupling network (77) wave filter |
331/78 | 331 oscillators/(78) electrical noise or random wave generator |
331/79 | 331 oscillators/(79) beam tube |
331/80 | 331 oscillators/(79) beam tube (80) with beam sweeping or deflecting means |
331/81 | 331 oscillators/(79) beam tube (81) with electron bunching or velocity variation means |
331/82 | 331 oscillators/(79) beam tube (81) with electron bunching or velocity variation means (82) traveling wave type |
331/83 | 331 oscillators/(79) beam tube (81) with electron bunching or velocity variation means (83) multicavity type (e.g., klystron) |
331/84 | 331 oscillators/(79) beam tube (81) with electron bunching or velocity variation means (84) reflex type (i.e., with repeller electrode) |
331/86 | 331 oscillators/(86) with magnetically controlled space discharge device (e.g., magnetron) |
331/87 | 331 oscillators/(86) with magnetically controlled space discharge device (e.g., magnetron) (87) with particular pulsing means |
331/88 | 331 oscillators/(86) with magnetically controlled space discharge device (e.g., magnetron) (88) with frequency stabilization |
331/89 | 331 oscillators/(86) with magnetically controlled space discharge device (e.g., magnetron) (89) with secondary emissive electrode |
331/90 | 331 oscillators/(86) with magnetically controlled space discharge device (e.g., magnetron) (90) with frequency adjustment |
331/91 | 331 oscillators/(86) with magnetically controlled space discharge device (e.g., magnetron) (91) with undesired mode suppression or selection means |
331/92 | 331 oscillators/(92) retarding field tube-type oscillators (e.g., barkhausen kurz) |
331/93 | 331 oscillators/(92) retarding field tube-type oscillators (e.g., barkhausen kurz) (93) with distributed parameter resonator |
331/95 | 331 oscillators/(95) butterfly resonator |
331/96 | 331 oscillators/(96) with distributed parameter resonator |
331/97 | 331 oscillators/(96) with distributed parameter resonator (97) tube enclosed by resonator structure |
331/98 | 331 oscillators/(96) with distributed parameter resonator (97) tube enclosed by resonator structure (98) disk seal tube (e.g., lighthouse, pencil tube) |
331/99 | 331 oscillators/(96) with distributed parameter resonator (99) parallel wire type |
331/100 | 331 oscillators/(96) with distributed parameter resonator (99) parallel wire type (100) push-pull type |
331/101 | 331 oscillators/(96) with distributed parameter resonator (101) coaxial or shielded line type |
331/102 | 331 oscillators/(96) with distributed parameter resonator (101) coaxial or shielded line type (102) push-pull type |
331/103 | 331 oscillators/(103) tube structure forms inductive part of resonant circuit |
331/104 | 331 oscillators/(104) transit time oscillator |
331/105 | 331 oscillators/(105) with parasitic oscillation control or prevention means |
331/106 | 331 oscillators/(106) with periodoic or repetitious amplitude varying means (e.g., tremolo) |
331/107R | 331 oscillators/(107r) solid state active element oscillator |
331/108R | 331 oscillators/(107r) solid state active element oscillator (108r) transistors |
331/109 | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (109) amplitude stabilization and control |
331/110 | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (110) bridge type |
331/111 | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (111) relaxation oscillator |
331/112 | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (111) relaxation oscillator (112) blocking oscillator type |
331/113R | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (111) relaxation oscillator (113r) multivibrator type |
331/113A | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (111) relaxation oscillator (113r) multivibrator type (113a) saturable core controlled converters |
331/113S | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (111) relaxation oscillator (113r) multivibrator type (113s) converter using silicon control rectifiers |
331/114 | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (114) push-pull |
331/115 | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (115) negative resistance |
331/116R | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (116r) electromechanical resonator controlled |
331/116FE | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (116r) electromechanical resonator controlled (116fe) field-effect transistor active element |
331/116M | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (116r) electromechanical resonator controlled (116m) electromechanical resonators other than piezoelectric crystals |
331/117R | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (117r) l-c type |
331/117FE | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (117r) l-c type (117fe) field-effect transistor active element |
331/117D | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (117r) l-c type (117d) distributed parameter resonator transistor oscillators |
331/108A | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (108a) use of complimentary-type transistors |
331/108B | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (108b) phase shift oscillator |
331/108C | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (108c) integrated circuit oscillators |
331/108D | 331 oscillators/(107r) solid state active element oscillator (108r) transistors (108d) integrated modules with discrete elements oscillators |
331/107DP | 331 oscillators/(107r) solid state active element oscillator (107dp) significant distributed parameter resonator (e.g., cavity) |
331/107P | 331 oscillators/(107r) solid state active element oscillator (107dp) significant distributed parameter resonator (e.g., cavity) (107p) parallel-connected oscillator devices |
331/107SL | 331 oscillators/(107r) solid state active element oscillator (107dp) significant distributed parameter resonator (e.g., cavity) (107sl) stripline type |
331/107C | 331 oscillators/(107r) solid state active element oscillator (107dp) significant distributed parameter resonator (e.g., cavity) (107c) coaxial type |
331/107A | 331 oscillators/(107r) solid state active element oscillator (107a) acoustoelectric device oscillators |
331/107G | 331 oscillators/(107r) solid state active element oscillator (107g) gunn-type bulk effect device oscillators |
331/107S | 331 oscillators/(107r) solid state active element oscillator (107s) superconductive device oscillators |
331/107T | 331 oscillators/(107r) solid state active element oscillator (107t) tunnel diode oscillators |
331/126 | 331 oscillators/(126) gaseous space discharge device |
331/127 | 331 oscillators/(126) gaseous space discharge device (127) spark or open arc type |
331/128 | 331 oscillators/(126) gaseous space discharge device (128) drives shock excited l.c. circuit |
331/129 | 331 oscillators/(126) gaseous space discharge device (129) relaxation oscillator |
331/130 | 331 oscillators/(126) gaseous space discharge device (129) relaxation oscillator (130) plural gaseous devices |
331/131 | 331 oscillators/(126) gaseous space discharge device (129) relaxation oscillator (131) discharge device or rectifier in "c" or "l" charging or discharging circuit |
331/132 | 331 oscillators/(132) negative resistance or negative transconductance oscillator |
331/133 | 331 oscillators/(132) negative resistance or negative transconductance oscillator (133) secondary emission (e.g., dynatron) |
331/134 | 331 oscillators/(132) negative resistance or negative transconductance oscillator (134) transitron type |
331/135 | 331 oscillators/(135) phase shift type |
331/136 | 331 oscillators/(135) phase shift type (136) zero phase shift |
331/137 | 331 oscillators/(135) phase shift type (137) with r.c. ladder-type phase shift network |
331/138 | 331 oscillators/(138) bridge type |
331/139 | 331 oscillators/(138) bridge type (139) piezoelectric crystal in bridge |
331/140 | 331 oscillators/(138) bridge type (140) r.c. or r.l. type |
331/141 | 331 oscillators/(138) bridge type (140) r.c. or r.l. type (141) wien bridge |
331/142 | 331 oscillators/(138) bridge type (140) r.c. or r.l. type (142) double t bridge |
331/143 | 331 oscillators/(143) relaxation oscillators |
331/144 | 331 oscillators/(143) relaxation oscillators (144) multivibrators |
331/145 | 331 oscillators/(143) relaxation oscillators (144) multivibrators (145) with sync, triggering or pulsing circuit |
331/146 | 331 oscillators/(143) relaxation oscillators (146) blocking oscillators |
331/147 | 331 oscillators/(143) relaxation oscillators (146) blocking oscillators (147) using discharge device with plural grids |
331/148 | 331 oscillators/(143) relaxation oscillators (146) blocking oscillators (148) with 3 or more winding feedback transformers |
331/149 | 331 oscillators/(143) relaxation oscillators (146) blocking oscillators (149) with sync, trigger, or pulsing circuit (e.g., self-pulsing) |
331/150 | 331 oscillators/(143) relaxation oscillators (150) output supplied to another discharge device circuit |
331/151 | 331 oscillators/(143) relaxation oscillators (151) involving resonant or inductive wave forming circuit or transformer |
331/152 | 331 oscillators/(143) relaxation oscillators (152) multi-grid discharge device in charged capacitor circuit |
331/153 | 331 oscillators/(143) relaxation oscillators (153) with sync, trigger or pulsing circuit |
331/154 | 331 oscillators/(154) electromechanical resonator |
331/155 | 331 oscillators/(154) electromechanical resonator (155) with optical, piezoelectric or acoustic coupling means |
331/156 | 331 oscillators/(154) electromechanical resonator (156) vibrating reed or string type (e.g., tuning fork) |
331/157 | 331 oscillators/(154) electromechanical resonator (157) magnetostrictive |
331/158 | 331 oscillators/(154) electromechanical resonator (158) crystal |
331/159 | 331 oscillators/(154) electromechanical resonator (158) crystal (159) plural tube |
331/160 | 331 oscillators/(154) electromechanical resonator (158) crystal (160) with means to limit crystal current or voltage |
331/161 | 331 oscillators/(154) electromechanical resonator (158) crystal (161) with crystal substitution |
331/162 | 331 oscillators/(154) electromechanical resonator (158) crystal (162) plural crystals in circuit |
331/163 | 331 oscillators/(154) electromechanical resonator (158) crystal (163) crystal having three or more electrodes in circuit |
331/164 | 331 oscillators/(154) electromechanical resonator (158) crystal (164) anode or cathode to grid crystal circuit |
331/165 | 331 oscillators/(165) shock excited resonant circuit |
331/166 | 331 oscillators/(165) shock excited resonant circuit (166) with keying means of the active element type (e.g., burst generator) |
331/167 | 331 oscillators/(167) l-c type oscillators |
331/168 | 331 oscillators/(167) l-c type oscillators (168) plural tubes |
331/169 | 331 oscillators/(167) l-c type oscillators (169) anode to cathode coupled or connected resonant circuit |
331/170 | 331 oscillators/(167) l-c type oscillators (170) anode to grid coupled or connected resonant circuit |
331/171 | 331 oscillators/(167) l-c type oscillators (171) grid to cathode coupled or connected resonant circuit |
331/172 | 331 oscillators/(172) with synchronizing, triggering or pulsing circuits |
331/173 | 331 oscillators/(172) with synchronizing, triggering or pulsing circuits (173) triggering or pulsing (e.g., burst generators) |
331/174 | 331 oscillators/(172) with synchronizing, triggering or pulsing circuits (173) triggering or pulsing (e.g., burst generators) (174) self-quenched |
331/175 | 331 oscillators/(175) frequency stabilization |
331/176 | 331 oscillators/(175) frequency stabilization (176) temperature or current responsive means in circuit |
331/177R | 331 oscillators/(177r) with frequency adjusting means |
331/178 | 331 oscillators/(177r) with frequency adjusting means (178) cyclic frequency sweeping means (e.g., vibrato) |
331/179 | 331 oscillators/(177r) with frequency adjusting means (179) step-frequency change (e.g., band selection, frequency-shift keying) |
331/180 | 331 oscillators/(177r) with frequency adjusting means (180) reactance tube type |
331/181 | 331 oscillators/(177r) with frequency adjusting means (181) variable inductance device (e.g., saturable core or adjustable vane inductor) |
331/177V | 331 oscillators/(177r) with frequency adjusting means (177v) with voltage sensitive capacitor |
331/182 | 331 oscillators/(182) amplitude control or stabilization |
331/183 | 331 oscillators/(182) amplitude control or stabilization (183) automatic |
331/184 | 331 oscillators/(184) having discharged device or particular construction |
331/185 | 331 oscillators/(185) with particular source of power or bias voltage |
331/186 | 331 oscillators/(185) with particular source of power or bias voltage (186) regulated |
331/187 | 331 oscillators/(187) miscellaneous oscillator structures |
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