IP Library › Granted Patent US 4,282,410
Granted Patent Utility
US 4,282,410 · App. 06/028,622

Ringing signal generator

Inventors: John A. Gauthier, David M. Shaver
Patented Case View Patent ↗
Granted: Aug 4, 1981 Filed: Apr 9, 1979
Inventors
John A. Gauthier
David M. Shaver
Assignee (at issue)
GTE Automatic Electric Labs Inc.

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Quick Facts
Patent No.
US 4,282,410
App. No.
06/028,622
Filed
1979-04-09
Granted
1981-08-04
Kind
A