Granted Patent
Utility
US 4,360,431 · App. 06/259,435
Self-unloading centrifuge
Inventor:
Frank Little
Patented Case
View Patent ↗
Granted: Nov 23, 1982
Filed: May 1, 1981
Inventor
Frank Little
Assignee (at issue)
The Harshaw Chemical 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.