Granted Patent
Utility
US 6,031,908 · App. 08/970,874
Echo canceller employing dual-H architecture having variable adaptive gain settings
Inventors:
Kenneth P. Laberteaux, Richard C. Younce, Bruce E. Dunne, David Farrell
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Nov 14, 1997
Inventors
Kenneth P. Laberteaux
Richard C. Younce
Bruce E. Dunne
David Farrell
Assignee (at issue)
Tellabs Operations, 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.