Granted Patent
Utility
US 6,068,762 · App. 08/721,417
Reusable oil filter assembly
Inventors:
Walter H. Stone, Michael D. Clausen
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Sep 26, 1996
Inventors
Walter H. Stone
Michael D. Clausen
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.