Granted Patent
Utility
US 4,517,140 · App. 06/490,598
Device and method for centrifugally casting articles
Inventor:
David Lionel Rawlings
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: May 2, 1983
Inventor
David Lionel Rawlings
Assignee (at issue)
International Hydron 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.