Granted Patent
Utility
US 4,304,744 · App. 06/156,436
Method of forming sealing gaskets in container closures
Inventor:
Gaston A. Stroud
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: Jun 4, 1980
Inventor
Gaston A. Stroud
Assignee (at issue)
W. R. Grace & Co.
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.