Granted Patent
Utility
US 4,408,010 · App. 06/432,492
Polyblend of styrene copolymers and molded article produced therefrom
Inventor:
Bi Le-Khac
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Oct 4, 1982
Inventor
Bi Le-Khac
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.