Granted Patent
Utility
US 4,747,584 · App. 07/051,943
Apparatus for injecting alloying ingredient into molten metal stream
Inventors:
Daniel Rellis, Jr., Roger J. Glennon
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: May 19, 1987
Inventors
Daniel Rellis, Jr.
Roger J. Glennon
Assignee (at issue)
Inland Steel 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.