Granted Patent
Utility
US 6,014,371 · App. 08/994,867
Echo cancellation system and method for multipoint networks
Inventor:
William L. Betts
Patented Case
View Patent ↗
Granted: Jan 11, 2000
Filed: Dec 19, 1997
Inventor
William L. Betts
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.