Granted Patent
Utility
US 4,230,176 · App. 05/899,769
Floating radiator tank top
Inventor:
Donald R. Crews
Patented Case
View Patent ↗
Granted: Oct 28, 1980
Filed: Apr 24, 1978
Inventor
Donald R. Crews
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.