Granted Patent
Utility
US 5,856,970 · App. 08/692,353
Multi-channel echo cancellation method and apparatus
Inventors:
Donald Gee, Bruce Geren, James B. Piket, William Chunhung Yip
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: Aug 5, 1996
Inventors
Donald Gee
Bruce Geren
James B. Piket
William Chunhung Yip
Assignee (at issue)
Motorola, 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.