Granted Patent
Utility
US 6,174,438 · App. 09/419,182
Dual pass fuel filter assembly and element therefor
Inventors:
David H. Hodgkins, Walter H. Stone
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Oct 15, 1999
Inventors
David H. Hodgkins
Walter H. Stone
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.