Granted Patent
Utility
US 5,837,137 · App. 08/700,792
Base/cartridge location and key system for fuel filter assembly
Inventor:
Leon P. Janik
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Aug 21, 1996
Inventor
Leon P. Janik
Assignee (at issue)
Stanadyne Automotive Corp.
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.