Granted Patent
Utility
US 4,579,680 · App. 06/671,015
Aliphatic nitriles
Inventor:
Charles Stanley Sell
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Nov 13, 1984
Inventor
Charles Stanley Sell
Assignee (at issue)
Internationale Otrool Maatschappij Octropa B.V.
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.