Granted Patent
Utility
US 4,352,431 · App. 06/045,513
Apparatus for sorting contaminant material from processing material
Inventor:
Adrian Artiano
Patented Case
View Patent ↗
Granted: Oct 5, 1982
Filed: Jun 4, 1979
Inventor
Adrian Artiano
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.