Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Device for controlling extension and retraction of an antenna

Device for controlling extension and retraction of an antenna

US Patent 5689821 · Granted Nov 18, 1997

Estimated economic value: $24,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Mobile terminal, a peeking prevention method and a program for peeking preventio2014
Telephone device with mail function, method of initiating mail, and program2013
Portable terminal device having timer2007
Voltage detection circuit2001
Foldable portable telephone set1996
Electromagnetic drive device for shutter1986
Motion picture system1981