Granted Patent
Utility
US 5,500,880 · App. 08/359,327
Transmission system comprising a sub-band echo canceller which includes a sub-band coding arrangement
Inventor:
Walter Kellermann
Patented Case
View Patent ↗
Granted: Mar 19, 1996
Filed: Dec 16, 1994
Inventor
Walter Kellermann
Assignee (at issue)
U.S. Philips 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.