Granted Patent
Utility
US 5,790,633 · App. 08/506,655
System for proactively maintaining telephone network facilities in a public switched telephone network
Inventors:
James C. Kinser, Jr., William C. Casey, Frederick D. Blum, Mary A. Youngs
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Jul 25, 1995
Inventors
James C. Kinser, Jr.
William C. Casey
Frederick D. Blum
Mary A. Youngs
Assignee (at issue)
Bell Atlantic Network Services
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.