Granted Patent
Utility
US 4,233,409 · App. 06/055,202
Polymeric blend
Inventor:
Charles W. Bulkley
Patented Case
View Patent ↗
Granted: Nov 11, 1980
Filed: Jul 5, 1979
Inventor
Charles W. Bulkley
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.