Granted Patent
Utility
US 5,348,458 · App. 08/082,479
Apparatus for producing foamed, molded thermoplastic articles and articles produced thereby
Inventor:
Thomas M. Pontiff
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Jun 28, 1993
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.