Granted Patent
Utility
US 3,974,343 · App. 05/540,077
Small modular communications switching system with distributed programmable control
Inventors:
Thomas K. Cheney, Anatol Kuczura
Patented Case
View Patent ↗
Granted: Aug 10, 1976
Filed: Jan 10, 1975
Inventors
Thomas K. Cheney
Anatol Kuczura
Assignee (at issue)
North Electric Company
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.