Granted Patent
Utility
US 4,862,838 · App. 07/245,502
Crankcase oil spray nozzle for piston cooling
Inventors:
David H. Hodgkins, Leon P. Janik
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Sep 19, 1988
Inventors
David H. Hodgkins
Leon P. Janik
Assignee (at issue)
Stanadyne Automotive Corp.
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.