Granted Patent
Utility
US 5,643,448 · App. 08/515,715
Spin-on filter assembly incorporating a re-usable tubular filter screen
Inventors:
Henry Martin, Ian M Cox, Scott A. Rodibaugh
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Aug 16, 1995
Inventors
Henry Martin
Ian M Cox
Scott A. Rodibaugh
Assignee (at issue)
The Glacier Metal Company Limited
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.