Granted Patent
Utility
US 4,393,913 · App. 06/287,541
Tire and wheel configuration
Inventors:
Charles E. Grawey, John J. Groezinger
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Jun 8, 1981
Inventors
Charles E. Grawey
John J. Groezinger
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.