Granted Patent
Utility
US 4,419,492 · App. 06/290,645
Process for preparing ABS polymeric polyblends
Inventor:
Robert H. M. Simon
Patented Case
View Patent ↗
Granted: Dec 6, 1983
Filed: Aug 6, 1981
Inventor
Robert H. M. Simon
Assignee (at issue)
Monsanto 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.