IP Library › Granted Patent US 5,097,501
Granted Patent Utility
US 5,097,501 · App. 07/546,323

Key telephone interface

Inventor: Walter G. Kutzavitch
Patented Case View Patent ↗
Granted: Mar 17, 1992 Filed: Jun 29, 1990
Inventor
Walter G. Kutzavitch
Assignee (at issue)
AT&T Bell Laboratories

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Quick Facts
Patent No.
US 5,097,501
App. No.
07/546,323
Filed
1990-06-29
Granted
1992-03-17
Kind
A