Granted Patent
Utility
US 4,890,790 · App. 07/252,693
Engine cooling system, structure therefor and methods of making the same
Inventor:
Joseph P. Wagner
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: Oct 3, 1988
Inventor
Joseph P. Wagner
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE 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.