Granted Patent
Utility
US 4,291,745 · App. 06/103,453
Foundry mold jacket
Inventor:
Willard R. Scheiderer
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Dec 14, 1979
Inventor
Willard R. Scheiderer
Assignee (at issue)
Grede Foundries, Inc.
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.