Granted Patent
Utility
US 4,424,042 · App. 06/286,127
Propulsion system for an underwater vehicle
Inventor:
Calvin A. Gongwer
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Jul 23, 1981
Inventor
Calvin A. Gongwer
Assignee (at issue)
Bendix Limited
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.