Granted Patent
Utility
US 6,616,836 · App. 08/902,625
Filter element for oil pans and filter element/oil pan combination
Inventor:
Edward Allen Covington
Patented Case
View Patent ↗
Granted: Sep 9, 2003
Filed: Jul 29, 1997
Inventor
Edward Allen Covington
Assignee (at issue)
DANA 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.