Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Coupling circuit between high impedance piezoelectric signal source and utilizing circuit

Coupling circuit between high impedance piezoelectric signal source and utilizing circuit

US Patent 4490639 · Granted Dec 25, 1984

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Testing a circuit assembly that contains a piezoelectric switch2015
Touchless microwave switch2015
Smart card RFID reader2015
Access control apparatus2006
Keypad2004
Keypad2002
Weatherproof electronic keypad with replaceable graphics overlay1997
Piezoelectric multiaxis micropositioner1988
Sensor for an alarm system1987
Piezoelectric electromechanical translation apparatus and method1986
Pressure sensitive electric signal generator1984