Granted Patent
Utility
US 4,663,889 · App. 06/885,104
Apparatus and method for grinding sidewall areas of tires
Inventors:
John Arndt Strand, III, David P. Krause, Christopher Erickson
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Jul 14, 1986
Inventors
John Arndt Strand, III
David P. Krause
Christopher Erickson
Assignee (at issue)
The Firestone Tire & 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.