Granted Patent
Utility
US 4,959,856 · App. 07/347,551
Automatic administration of a telecommunication system
Inventors:
Raymond B. Bischoff, Norman C. Chan
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: May 4, 1989
Inventors
Raymond B. Bischoff
Norman C. Chan
Assignee (at issue)
AT&T Bell Laboratories
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.