Granted Patent
Utility
US 6,731,752 · App. 09/708,403
Method and circuit for echo-cancellation in two-way communications
Inventors:
Naom Chaplik, Chanchai Poonpol, Mark T. Robinson
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Nov 8, 2000
Inventors
Naom Chaplik
Chanchai Poonpol
Mark T. Robinson
Assignee (at issue)
Viadux, Inc.
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.