Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Power supply control circuit for subscriber carrier telephone system

Power supply control circuit for subscriber carrier telephone system

US Patent 4380687 · Granted Apr 19, 1983

Estimated economic value: $12,305,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

System and method for dosing wine barrels with sulfur dioxide gas2024
Method for manufacturing gun barrels2023
Gun barrel manufacturing process2016
Flyash coating2006
Power supply control circuit for subscriber carrier telephone system1983
Microwave movement detector1982