Granted Patent
Utility
US 4,295,886 · App. 05/404,198
Flame-retardant polyester fiber compositions
Inventor:
John T. Gresham
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: Oct 9, 1973
Inventor
John T. Gresham
Assignee (at issue)
Avtex Fibers Inc.
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.