Granted Patent
Utility
US 4,209,437 · App. 05/924,465
Extraction resistant liquid ethylene-vinyl acetate copolymer plasticized polyvinyl chloride resin
Inventor:
Joseph Fischer
Patented Case
View Patent ↗
Granted: Jun 24, 1980
Filed: Jul 14, 1978
Inventor
Joseph Fischer
Assignee (at issue)
National Distillers and Chemical 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.