Granted Patent
Utility
US 6,516,063 · App. 09/535,305
Echo canceller having improved non-linear processor
Inventors:
David Farrell, Tianfang Liu
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Mar 24, 2000
Inventors
David Farrell
Tianfang Liu
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.