Granted Patent
Utility
US 4,247,678 · App. 06/067,265
Polyurethane derived from both an aliphatic dicarboxylic acid and an aromatic dicarboxylic acid and fuel container made therefrom
Inventor:
Daniel A. Chung
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Aug 17, 1979
Inventor
Daniel A. Chung
Assignee (at issue)
THE GOODYEAR 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.