Granted Patent
Utility
US 5,933,494 · App. 08/568,843
Echo canceling method and apparatus in a communication device
Inventors:
Ganning Yang, Kenneth E. Garey
Patented Case
View Patent ↗
Granted: Aug 3, 1999
Filed: Dec 7, 1995
Inventors
Ganning Yang
Kenneth E. Garey
Assignee (at issue)
Rockwell International 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.