Granted Patent
Utility
US 5,211,787 · App. 07/707,492
Method for improving the aging resistance of the sidewalls of retreaded tires
Inventors:
Yoshihiro Makino, Larry B. Elkins
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: May 30, 1991
Inventors
Yoshihiro Makino
Larry B. Elkins
Assignee (at issue)
Bridgestone Firestone
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.