Granted Patent
Utility
US 5,774,565 · App. 08/493,017
Electronic cancellation of ambient noise in telephone headset
Inventors:
Roger David Benning, Elliot Andrew Fischer, Patricia Lee Greene, Charles Sanford, Robert Edward Schneider
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Oct 28, 1996
Inventors
Roger David Benning
Elliot Andrew Fischer
Patricia Lee Greene
Charles Sanford
Robert Edward Schneider
Assignee (at issue)
LUCENT TECHNOLOGIES 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.