Granted Patent
Utility
US 4,802,148 · App. 06/440,150
Side-looking sonar apparatus
Inventor:
George A. Gilmour
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Nov 8, 1982
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.