Granted Patent
Utility
US 5,293,376 · App. 07/819,404
Upgraded telecommunication network
Inventor:
Patrick E. White
Patented Case
View Patent ↗
Granted: Mar 8, 1994
Filed: Jan 10, 1992
Inventor
Patrick E. White
Assignee (at issue)
Bell Communications Research, 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.