Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Contact-free push-button key for generating an electrical signal upon depression thereof

Contact-free push-button key for generating an electrical signal upon depression thereof

US Patent 4507651 · Granted Mar 26, 1985

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Drill string valve and method2014
Drill string valve and method2013
Magnetic field sensor device2005
Ferro-magnetic foil for a torque sensor1988
Method, apparatus and feeder sleeves for the production of casting moulds1988
Method for manufacturing a torque sensor1987
Magnetic core comprised of low-retentivity amorphous alloy1981
System for measuring entrained solid flow1980
Gas cleaning apparatus1980