Granted Patent
Utility
US 4,246,530 · App. 05/965,851
Memory network for TDM switching system
Inventor:
Billy A. Montgomery
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Dec 4, 1978
Inventor
Billy A. Montgomery
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.