Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Building security, communication and control system

Building security, communication and control system

US Patent 4409590 · Granted Oct 11, 1983

Estimated economic value: $7,086,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Clear channel detector for binary digital data transmission system1984
Method and apparatus for digital automatic frequency control of chirped oscillat1984
Power-line carrier communications system with interference avoidance capability1984
Method and circuitry for chirped oscillator automatic frequency control1984
Method and apparatus for data transmission using chirped frequency-shift-keying 1984
Method for digital data transmission with bit-echoed arbitration1984