Granted Patent
Utility
US 4,331,583 · App. 06/234,905
Catalysts for foundry core binders
Inventor:
George S. Everett
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Feb 17, 1981
Inventor
George S. Everett
Assignee (at issue)
The Quaker Oats 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.