Granted Patent
Utility
US 4,290,990 · App. 06/187,693
Method of forming the mounting portion of a sidewall protector
Inventors:
Richard W. Kizer, Arlynn W. Anderson, Robert W. Untz
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Sep 16, 1980
Inventors
Richard W. Kizer
Arlynn W. Anderson
Robert W. Untz
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.