Granted Patent
Utility
US 4,475,389 · App. 06/410,505
Radiator cap probe
Inventor:
Robert S. Harris
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Aug 23, 1982
Inventor
Robert S. Harris
Assignee (at issue)
Stant Corporation
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.