Granted Patent
Utility
US 4,670,494 · App. 06/760,669
Flame retardant low smoke poly(vinyl chloride) thermoplastic composition
Inventor:
Nicholas J. Semenza, Jr.
Patented Case
View Patent ↗
Granted: Jun 2, 1987
Filed: Jul 30, 1985
Inventor
Nicholas J. Semenza, Jr.
Assignee (at issue)
Gary 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.