Granted Patent
Utility
US 5,649,002 · App. 08/357,172
Method and apparatus for detecting a telephone CPE alerting signal
Inventors:
Robert H. Brady, David Zielski, William L. Nutter, Alexander Marra
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Dec 13, 1994
Inventors
Robert H. Brady
David Zielski
William L. Nutter
Alexander Marra
Assignee (at issue)
Colonial Data Technologies Corp.
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.