Granted Patent
Utility
US 4,564,443 · App. 06/728,164
Reverse centrifugal cleaning of paper making stock
Inventor:
Terry L. Bliss
Patented Case
View Patent ↗
Granted: Jan 14, 1986
Filed: Apr 30, 1985
Inventor
Terry L. Bliss
Assignee (at issue)
Black Clawson Company, Inc.
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.