Granted Patent
Utility
US 4,329,439 · App. 06/250,348
Process for polymerizing dienes
Inventor:
Delmar F. Lohr, Jr.
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Apr 2, 1981
Inventor
Delmar F. Lohr, Jr.
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.