Granted Patent
Utility
US 4,573,128 · App. 06/480,988
Digital method for the measurement and control of liquid level in a continuous casting mold
Inventor:
Chester C. Mazur
Patented Case
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Granted: Feb 25, 1986
Filed: Mar 31, 1983
Inventor
Chester C. Mazur
Assignee (at issue)
United States Steel 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.