Granted Patent
Utility
US 6,146,527 · App. 09/063,655
Spin-on filter cartridge with replaceable element
Inventor:
Victor R. Oelschlaegel
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Apr 21, 1998
Inventor
Victor R. Oelschlaegel
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.