Granted Patent
Utility
US 4,261,412 · App. 06/038,967
Fine grain casting method
Inventors:
Ferhun H. Soykan, John S. Huntington
Patented Case
View Patent ↗
Granted: Apr 14, 1981
Filed: May 14, 1979
Inventors
Ferhun H. Soykan
John S. Huntington
Assignee (at issue)
SPECIAL METALS 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.