Granted Patent
Utility
US 4,487,913 · App. 06/588,598
Fuel and hydrolysis resistant polyurethane
Inventor:
Daniel A. Chung
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Mar 12, 1984
Inventor
Daniel A. Chung
Assignee (at issue)
Goodyear Aerospace Corporation
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.