Granted Patent
Utility
US 6,804,348 · App. 09/708,771
Circuit for echo-cancellation in an asymmetric, two-way time-and frequency-shared communication medium
Inventor:
Naom Chaplik
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: Nov 8, 2000
Inventor
Naom Chaplik
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.