Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Telephone loop tester

Telephone loop tester

US Patent D318431 · Granted Jul 23, 1991

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Cable continuity test system2004
Telephone-line powered coin telephone chassis1999
Electronic lock for coin telephones1998
Method of communicating data from remote devices to a central computer via a tel1997
Monitoring system for remote devices1995
Telecommunications test adapter1995
Test cord apparatus1994
Elastomeric article proximity switch1993
Telecommunications test connector1993
Telecommunications test connector1993
Multiwire-pair telecommunications test system1993
Telecommunications cable tester1993