Granted Patent
Utility
US 4,450,893 · App. 06/258,232
Method and apparatus for casting metals and alloys
Inventors:
Joseph Winter, Derek E. Tyler, Jonathan A. Dantzig
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Apr 27, 1981
Inventors
Joseph Winter
Derek E. Tyler
Jonathan A. Dantzig
Assignee (at issue)
International Telephone and Telegraph Corporation
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.