Granted Patent
Utility
US 5,487,650 · App. 08/162,566
Automotive fuel pump with helical impeller
Inventors:
Robert D. Gaston, DeQuan Yu
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Dec 7, 1993
Inventors
Robert D. Gaston
DeQuan Yu
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.