Granted Patent
Utility
US 5,745,274 · App. 08/579,529
Maintenance of optical networks
Inventors:
Mohammad Taghi Fatehi, Fred L. Heismann
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Dec 27, 1995
Inventors
Mohammad Taghi Fatehi
Fred L. Heismann
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.