Granted Patent
Utility
US 6,645,373 · App. 10/055,450
Dual element water sensing fuel dispenser filter
Inventor:
Michael J. Gruca
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Jan 23, 2002
Inventor
Michael J. Gruca
Assignee (at issue)
CHAMPION LABORATORIES, INC.
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.