Granted Patent
Utility
US 4,445,262 · App. 06/451,677
Procedure for rebuilding the movable plate in the pouring valve of a ladle
Inventor:
Romano Cappelli
Patented Case
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Granted: May 1, 1984
Filed: Dec 21, 1982
Inventor
Romano Cappelli
Assignee (at issue)
USS Engineers and Consultants, 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.