Granted Patent
Utility
US 4,454,000 · App. 06/525,361
Motorized tool for joining self adhesive plies of unvulcanized rubber
Inventor:
Robert Schlemmer
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Aug 22, 1983
Inventor
Robert Schlemmer
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.