Granted Patent
Utility
US 5,809,463 · App. 08/528,967
Method of detecting double talk in an echo canceller
Inventors:
Sanjay Gupta, Prabhat K. Gupta
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Sep 15, 1995
Inventors
Sanjay Gupta
Prabhat K. Gupta
Assignee (at issue)
HUGHES ELECTRONICS LIMITED
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.