Granted Patent
Utility
US 4,392,846 · App. 06/264,389
Centrifuge apparatus
Inventors:
John Novoselac, Dale L. Churcher
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: May 18, 1981
Inventors
John Novoselac
Dale L. Churcher
Assignee (at issue)
Joy Manufacturing 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.