Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Trunk circuit with single coupling transformer

Trunk circuit with single coupling transformer

US Patent 4321431 · Granted Mar 23, 1982

Estimated economic value: $7,799,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Journal2009
Wheel2005
Wheel2005
Wheel2003
Method for blow-moulding1999
Method of blow-moulding1999
Dial tone detector1988
Digital tone detector1987
Digital tone detector1987
Subscriber line interface circuit1985
Subscriber line interface circuit1984
Power saving line circuit1983