Granted Patent
Utility
US 4,304,874 · App. 06/147,034
Fire-retardant anhydride copolymers
Inventors:
Adolph V. DiGiulio, Jack N. Bauer
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: May 6, 1980
Inventors
Adolph V. DiGiulio
Jack N. Bauer
Assignee (at issue)
Arco Polymers, 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.