IP Library › Granted Patent US 5,206,854
Granted Patent Utility
US 5,206,854 · App. 07/766,234

Detecting loss of echo cancellation

Inventors: William L. Betts, Robert A. Day
Patented Case View Patent ↗
Granted: Apr 27, 1993 Filed: Sep 24, 1991
Inventors
William L. Betts
Robert A. Day
Assignee (at issue)
AT&T Bell Laboratories

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Quick Facts
Patent No.
US 5,206,854
App. No.
07/766,234
Filed
1991-09-24
Granted
1993-04-27
Kind
A