Granted Patent
Utility
US 6,045,692 · App. 08/833,563
Oil filter to introduce anti-wear additives into engine lubricating system
Inventors:
Gerard W. Bilski, Charlie Probasco, Robert Voigt
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Apr 7, 1997
Inventors
Gerard W. Bilski
Charlie Probasco
Robert Voigt
Assignee (at issue)
AlliedSignal, 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.