Granted Patent
Utility
US 4,274,898 · App. 06/093,074
Tire buffing tool and method
Inventor:
Thomas S. Hulting, Jr.
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Aug 30, 1979
Inventor
Thomas S. Hulting, Jr.
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.