Granted Patent
Utility
US 4,498,167 · App. 06/353,695
TDM Communication system
Inventor:
James H. Bowen
Patented Case
View Patent ↗
Granted: Feb 5, 1985
Filed: Mar 1, 1982
Inventor
James H. Bowen
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.