Granted Patent
Utility
US 5,147,183 · App. 07/667,114
Rotary vane pump having enhanced cold start priming
Inventor:
Roger W. Gettel
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Mar 11, 1991
Inventor
Roger W. Gettel
Assignee (at issue)
Ford Motor Company
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.