Granted Patent
Utility
US 4,774,288 · App. 06/936,389
Resin cure system for hydrogenated nitrile polymer
Inventor:
John Ridland
Patented Case
View Patent ↗
Granted: Sep 27, 1988
Filed: Dec 1, 1986
Inventor
John Ridland
Assignee (at issue)
Polytec GmbH
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.