IP Library › Granted Patent US 4,382,163
Granted Patent Utility
US 4,382,163 · App. 06/286,834

Microcomputer controlled key telephone line circuit

Inventors: Thomas E. White, Paul U. Lind
Patented Case View Patent ↗
Granted: May 3, 1983 Filed: Jul 27, 1981
Inventors
Thomas E. White
Paul U. Lind
Assignee (at issue)
GTE Automatic Electric Labs Inc.

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Quick Facts
Patent No.
US 4,382,163
App. No.
06/286,834
Filed
1981-07-27
Granted
1983-05-03
Kind
A