Inventor

SHEPHERD GEOFFREY

3 patents

Patents

3 patents

US3971994AJul 27, 1976

Frequency comparison circuit

FERRANTI LTD11 citations68

US4001555AJan 4, 1977

Signal processing apparatus

FERRANTI LTD9 citations67

US3976948AAug 24, 1976

Pulse-frequency sensitive switching circuit arrangement

FERRANTI LTD7 citations67