Granted Patent
Utility
US 6,157,680 · App. 09/034,508
Audio distortion canceler method and apparatus
Inventors:
William L. Betts, Gordon Bremer
Patented Case
View Patent ↗
Granted: Dec 5, 2000
Filed: Mar 4, 1998
Inventors
William L. Betts
Gordon Bremer
Assignee (at issue)
PARADYNE CORPORATION
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.