IP Library › Granted Patent US 4,133,982
Granted Patent Utility
US 4,133,982 · App. 05/864,051

AC supervisory signal detector circuit

Inventors: David Q. Lee, Richard M. Rovnyak
Patented Case View Patent ↗
Granted: Jan 9, 1979 Filed: Dec 23, 1977
Inventors
David Q. Lee
Richard M. Rovnyak
Assignee (at issue)
GTE Automatic Electric Laboratories, Incorporated

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Quick Facts
Patent No.
US 4,133,982
App. No.
05/864,051
Filed
1977-12-23
Granted
1979-01-09
Kind
A