Granted Patent
Utility
US 4,381,364 · App. 06/387,799
Flame retardant tertiary polymer blend
Inventors:
Costas N. Georgacopoulos, Curtis P. Smith
Patented Case
View Patent ↗
Granted: Apr 26, 1983
Filed: Jun 14, 1982
Inventors
Costas N. Georgacopoulos
Curtis P. Smith
Assignee (at issue)
The Upjohn Co.
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.