Granted Patent
Utility
US 5,807,481 · App. 08/732,806
Oil filter assembly with support for removable planar filter
Inventors:
David H. Hodgkins, Dale M. Giva
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Oct 15, 1996
Inventors
David H. Hodgkins
Dale M. Giva
Assignee (at issue)
Parker-Hannifin Corporation
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.