Granted Patent
Utility
US 4,556,382 · App. 06/659,801
Die assembly for tire tread extrudate
Inventors:
John F. Nadeau, Jr., Alexander J. Varvaro
Patented Case
View Patent ↗
Granted: Dec 3, 1985
Filed: Oct 11, 1984
Inventors
John F. Nadeau, Jr.
Alexander J. Varvaro
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.