Granted Patent
Utility
US 5,838,769 · App. 08/775,764
Method of reducing risk that calls are blocked by egress switch or trunk failures
Inventors:
Howard McNeil, Donald S. Pitchford, Iyad Tarazi
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Dec 31, 1996
Inventors
Howard McNeil
Donald S. Pitchford
Iyad Tarazi
Assignee (at issue)
MCI Communications 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.