Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Intruder alarm arrangement for an optical communication system

Intruder alarm arrangement for an optical communication system

US Patent 4207561 · Granted Jun 10, 1980

Estimated economic value: $1,932,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Emitter proximity identification2011
Asynchronous integrated voice and data communication system1984
Frequency synthesizer1983
Fault locating arrangement for a two-way repeatered transmission link1981
Multiuser protected optical data bus distribution systems1980
Method and apparatus to provide a secure optical communication system1980