Granted Patent
Utility
US 4,728,274 · App. 07/050,661
Tire curing system
Inventor:
Karl J. Siegenthaler
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: May 18, 1987
Inventor
Karl J. Siegenthaler
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.