Granted Patent
Utility
US 4,287,648 · App. 06/133,699
Tire buffing blade
Inventors:
James R. Hineborg, Efrain Lopez
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Mar 24, 1980
Inventors
James R. Hineborg
Efrain Lopez
Assignee (at issue)
AMF 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.