Granted Patent
Utility
US 4,757,707 · App. 07/026,692
Molten metal gas analysis
Inventors:
David Harvey, David T. Wilson
Patented Case
View Patent ↗
Granted: Jul 19, 1988
Filed: Mar 17, 1987
Inventors
David Harvey
David T. Wilson
Assignee (at issue)
British 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.