Granted Patent
Utility
US 5,740,772 · App. 08/733,094
Oil filter cooler
Inventor:
James S. Bluma
Patented Case
View Patent ↗
Granted: Apr 21, 1998
Filed: Oct 18, 1996
Inventor
James S. Bluma
Assignee (at issue)
MIDWEST INSTRUMENT COMPANY
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.