Granted Patent
Utility
US 5,202,069 · App. 07/689,533
Method for producing foamed, molded thermoplastic articles
Inventor:
Thomas M. Pontiff
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Apr 23, 1991
Inventor
Thomas M. Pontiff
Assignee (at issue)
Astro-Valcour, Incorporated
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.