Granted Patent
Utility
US 4,311,391 · App. 06/107,800
Passive fiber optic sonar system
Inventor:
George A. Gilmour
Patented Case
View Patent ↗
Granted: Jan 19, 1982
Filed: Dec 27, 1979
Inventor
George A. Gilmour
Assignee (at issue)
Westinghouse Electric Company LLC
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.