Granted Patent
Utility
US 4,206,726 · App. 05/816,782
Double orifice piston cooling nozzle for reciprocating engines
Inventors:
John L. Johnson, Robert M. Vize, Noel D. Wiggins
Patented Case
View Patent ↗
Granted: Jun 10, 1980
Filed: Jul 18, 1977
Inventors
John L. Johnson
Robert M. Vize
Noel D. Wiggins
Assignee (at issue)
Caterpillar Tractor Co.
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.