Granted Patent
Utility
US 4,317,962 · App. 06/056,752
Distributed control for digital switching system
Inventors:
John E. Cox, Robert Treiber, John M. Cotton
Patented Case
View Patent ↗
Granted: Mar 2, 1982
Filed: Jul 12, 1979
Inventors
John E. Cox
Robert Treiber
John M. Cotton
Assignee (at issue)
International Telephone and Telegraph 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.