Granted Patent
Utility
US 4,377,664 · App. 06/320,400
Thermoplastic molding composition comprising a methyl methacrylate polymer and styrene-citraconic anhydride copolymer
Inventor:
Larry G. Bourland
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Nov 12, 1981
Inventor
Larry G. Bourland
Assignee (at issue)
Atlantic Richfield Company
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.