Granted Patent
Utility
US 4,401,144 · App. 06/302,592
Wheel rims for pneumatic tires
Inventor:
Ralph Wilde
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: Sep 15, 1981
Inventor
Ralph Wilde
Assignee (at issue)
Dunlop GmbH
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.