Granted Patent
Utility
US 5,291,847 · App. 07/961,015
Autonomous propulsion within a volume of fluid
Inventor:
Douglas C. Webb
Patented Case
View Patent ↗
Granted: Mar 8, 1994
Filed: Oct 14, 1992
Inventor
Douglas C. Webb
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.