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Class Information
Number: 331/117R
Name: Oscillators > Solid state active element oscillator > Transistors > L-c type
Description:










Sub-classes under this class:

Class Number Class Name Patents
331/117D Distributed parameter resonator transistor oscillators 377
331/117FE Field-effect transistor active element 571


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Patent Number Title Of Patent Date Issued
4450416 Voltage controlled oscillator May. 22, 1984
4443790 Broadcast band siren alarm transmitter system for vehicles Apr. 17, 1984
4431975 Oscillator circuit for ultrasonic cleaning Feb. 14, 1984
4419634 Oscillator whose frequency is controllable by a current variation Dec. 6, 1983
4413236 Circuit for deriving a timing signal from digital imput signals Nov. 1, 1983
4386327 Integrated circuit Clapp oscillator using transistor capacitances May. 31, 1983
4378531 Negative resistance oscillator suited for partial integration Mar. 29, 1983
4376269 Electronic security memory including on-off controlled oscillator Mar. 8, 1983
4360790 Varactor controlled push-pull oscillator Nov. 23, 1982
4356456 Division by noninteger numbers using synchronous oscillators Oct. 26, 1982
4355404 Carrier recovery network for QPSK modems employing synchronized oscillators Oct. 19, 1982
4353039 Monolithic astable multivibrator circuit Oct. 5, 1982
4346351 High frequency voltage-controlled oscillator Aug. 24, 1982
4345165 Methods and circuitry for varying a pulse output of a resonant circuit Aug. 17, 1982
4338574 Carrier recovering circuit for phase modulated signal Jul. 6, 1982
4337444 Radio frequency oscillator-modulator circuit Jun. 29, 1982
4329627 High frequency thyristor circuit for energizing a gaseous discharge lamp May. 11, 1982
4328525 Pulsed sine wave oscillating circuit arrangement May. 4, 1982
4319209 Fine tuning coil having steel wire forming coil portion Mar. 9, 1982
4318062 Ultrasonic wave nebulizer driving circuit Mar. 2, 1982
4310807 Digital position sensor including L/C sensing oscillator Jan. 12, 1982
4303894 FM Modulator using variable transistor capacitance Dec. 1, 1981
4287489 Amplitude limited varactor tuned L-C oscillator Sep. 1, 1981
4270102 Integrated circuit FM local oscillator with AFC control and temperature compensation May. 26, 1981
4267522 L.C. oscillator proximity detector May. 12, 1981
4264875 System for optical injection phase locking and switching of microwave oscillators Apr. 28, 1981
4257088 High-efficiency single-ended inverter circuit Mar. 17, 1981
4253180 Voltage controlled oscillator for a transmission line communications system receiver Feb. 24, 1981
4245178 High-frequency electrodeless discharge device energized by compact RF oscillator operating in class E mode Jan. 13, 1981
4243953 Voltage controlled oscillator presenting high impedance to parallel resonant tank circuit Jan. 6, 1981
4243954 Low level LC oscillator Jan. 6, 1981
4240051 High frequency power combiner or power divider Dec. 16, 1980
4230999 Oscillator incorporating negative impedance network having current mirror amplifier Oct. 28, 1980
4208741 AFC System for a synthesizer tuning system Jun. 17, 1980
4204160 Metal detector circuit with automatic optimum sensitivity adjustment May. 20, 1980
4189682 Microwave FET power circuit Feb. 19, 1980
4189685 Self-protecting transistor oscillator for treating animal tissues Feb. 19, 1980
4169248 Oscillating circuit Sep. 25, 1979
4158181 Dual clock logic system for charge-coupled device driver circuit Jun. 12, 1979
4156210 Resonant transformer push-pull transistor oscillator May. 22, 1979
4152671 Oscillator-modulator apparatus and method therefor May. 1, 1979
4146850 Tunable UHF oscillator with harmonic limitation Mar. 27, 1979
4138709 Proximity switch Feb. 6, 1979
4136315 Low and high frequency oscillators having common voltage regulator circuit Jan. 23, 1979
4135168 Reverse channel GaAsFET oscillator Jan. 16, 1979
4125784 Fail-safe or gate Nov. 14, 1978
4123725 Phase locked loop system Oct. 31, 1978
4112393 Automatically stabilized oscillator Sep. 5, 1978
4091339 Oscillator May. 23, 1978
4075580 Microwave transistor oscillator for wide band frequency tuning Feb. 21, 1978

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17










 
 
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