Granted Patent
Utility
US 5,348,646 · App. 07/976,964
Fluid filter assembly
Inventors:
John R. Costello, Leonard F. Knoedler, Monty E. Vincent, Mary K. Boomus
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Nov 16, 1992
Inventors
John R. Costello
Leonard F. Knoedler
Monty E. Vincent
Mary K. Boomus
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.