Granted Patent
Utility
US 4,253,893 · App. 06/081,414
Non-pneumatic tire
Inventors:
Richard L. Clinefelter, Larry R. Bradford
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: Oct 3, 1979
Inventors
Richard L. Clinefelter
Larry R. Bradford
Assignee (at issue)
The Gates Rubber Company
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.