Granted Patent
Utility
US 5,910,976 · App. 08/904,783
Method and apparatus for testing customer premises equipment alert signal detectors to determine talkoff and talkdown error rates
Inventors:
Charles W. Berthoud, James A. Johnanson
Patented Case
View Patent ↗
Granted: Jun 8, 1999
Filed: Aug 1, 1997
Inventors
Charles W. Berthoud
James A. Johnanson
Assignee (at issue)
LUCENT TECHNOLOGIES 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.