Granted Patent
Utility
US 5,423,296 · App. 08/173,004
Lubrication system for internal combustion engine
Inventor:
William Barr
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Dec 27, 1993
Inventor
William Barr
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.