Granted Patent
Utility
US 4,874,274 · App. 07/267,715
Apparatus for removing dross ridges from the sides and ends of a metal workpiece
Inventor:
Matthew Mancuso
Patented Case
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Granted: Oct 17, 1989
Filed: Nov 4, 1988
Inventor
Matthew Mancuso
Assignee (at issue)
Keibler-Thompson Corp.
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.