Granted Patent
Utility
US 5,537,366 · App. 08/497,917
Buried cable pipe detection sonar
Inventor:
George A. Gilmour
Patented Case
View Patent ↗
Granted: Jul 16, 1996
Filed: Jul 3, 1995
Inventor
George A. Gilmour
Assignee (at issue)
NORTHROP GRUMMAN 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.