Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Line identification apparatus for a telecommunications exchange

Line identification apparatus for a telecommunications exchange

US Patent 4587381 · Granted May 6, 1986

Estimated economic value: $7,446,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Data communication system1988
Dynamoelectric machine brush holder1982