Granted Patent
Utility
US 4,658,965 · App. 06/790,944
Disc screen classifier
Inventor:
William C. Smith
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Oct 24, 1985
Inventor
William C. Smith
Assignee (at issue)
Beloit 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.