IP Library › Granted Patent US 5,189,664
Granted Patent Utility
US 5,189,664 · App. 07/657,535

Listener echo cancellation

Inventor: King Y. Cheng
Patented Case View Patent ↗
Granted: Feb 23, 1993 Filed: Feb 19, 1991
Inventor
King Y. Cheng
Assignee (at issue)
SILICONSYSTEMS, INC.

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Quick Facts
Patent No.
US 5,189,664
App. No.
07/657,535
Filed
1991-02-19
Granted
1993-02-23
Kind
A