Granted Patent
Utility
US 6,561,155 · App. 09/807,209
Pumping apparatus for an internal combustion engine
Inventor:
David Williams
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Jun 13, 2001
Inventor
David Williams
Assignee (at issue)
Dana Automotive 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.