Granted Patent
Utility
US 4,306,313 · App. 06/083,743
High reliability optical fiber communication system
Inventor:
David Baldwin
Patented Case
View Patent ↗
Granted: Dec 15, 1981
Filed: Oct 11, 1979
Inventor
David Baldwin
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.