Granted Patent
Utility
US 4,276,012 · App. 06/128,002
Mold isolator mechanism for centrifugal casting machine
Inventor:
James H. C. Yang
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Mar 7, 1980
Inventor
James H. C. Yang
Assignee (at issue)
The Firestone Tire & Rubber 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.