Granted Patent
Utility
US 4,699,014 · App. 06/886,139
Molten metal sampler with sand cast mold part
Inventor:
Joseph J. Boron
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Jul 24, 1986
Inventor
Joseph J. Boron
Assignee (at issue)
MIDWEST INSTRUMENT COMPANY
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.