Granted Patent
Utility
US 5,920,257 · App. 08/903,666
System and method for isolating an outage within a communications network
Inventor:
G. L. Commerford
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Jul 31, 1997
Inventor
G. L. Commerford
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.