Granted Patent
Utility
US 3,975,473 · App. 05/583,663
Process for production of cellular thermoplastic bodies
Inventor:
William P. Mulvaney
Patented Case
View Patent ↗
Granted: Aug 17, 1976
Filed: Jun 4, 1975
Inventor
William P. Mulvaney
Assignee (at issue)
Union Carbide 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.