Title	Patent Filing Date
High-efficiency, switching, power amplifier	1974-09-30
Isolated DC amplifier circuit	1974-08-22
Wideband differential amplifier	1975-01-13
Limiting amplifier	1974-03-12
Variable gain amplifier controlled by ambient noise level	1974-03-27
Audio amplifier systems	1974-07-29
Low noise modular parametric amplifier	1974-05-31
Non-linear amplifier	1974-07-29
Protective circuit for transistor amplifier	1974-07-08
Pneumatic amplifier having a gain adjustment mechanism incorporated therein	1974-04-25
Video frequency amplifier operable in either of two bias conditions	1973-09-19
Amplifier with fast recovery after input signal overswing	1974-11-14
Amplifier for analogue signal samples with automatic gain control, and circuit for digitisation of such samples	1973-01-10
Control circuit for use with amplifier	1974-04-25
Integrated circuit for class-B power amplifier	1974-09-19
Transistor amplifier	1975-01-16
High performance differential amplifier	1975-01-17
Telecommunications signal amplifier	1973-03-26
Microwave amplifier tube coherency test set	1974-06-25
Class D amplifier	1974-02-21
Wideband DC current amplifier	1974-08-23
Differential charge amplifier for marine seismic applications	1974-01-08
Microwave transistor amplifier	1974-05-13
Analog signal processing system with correction for amplifier offset	1974-06-24
All saturated switching mode solid state RF amplifier	1973-12-17
Aspheric cassegrain laser power amplifier system	1975-04-11
Controlled gain amplifier	1974-11-04
Variable-gain amplifier	1973-10-19
Analog feedback amplifier employing a four-quadrant integrated circuit multiplier as the active control element	1974-06-03
Tunable oscillator/amplifier circuit for millimeter-wave diodes	1975-01-20
Switching circuit for use with balanced transformerless amplifier	1974-07-26
Broadband amplifier	1974-11-29
Power amplifier with distortion control	1974-10-24
Laser amplifier system	1974-11-01
Binary switching video amplifier	1974-10-07
Isolation amplifier	1974-11-07
Transistor amplifier	1974-07-05
Transmitter amplifier	1973-03-30
Amplifier employing complementary field-effect transistors	1974-10-23
Differential amplifier	1974-09-11
Fluid pressure amplifier	1974-08-01
Hand held bar code reader with constant linear amplifier output	1974-08-15
High frequency amplifier with frequency conversion	1975-01-30
Optical intermediate amplifier for a communication system	1973-09-21
Cascade-connected transistor amplifier	1975-04-01
Fast recovery limiting and phase inverting amplifier	1974-09-16
Read amplifier having retriggerable, variable duty cycle inhibit pulse generator	1974-04-08
Quantum amplifier having passive core and active cladding providing signal gain by interaction of evanescent-wave components of signal and pump beams propagating along the core	1973-04-13
Gain-controlled amplifier	1974-11-04
Amplifier for random access computer memory	1974-10-01