Granted Patent
Utility
US 5,634,770 · App. 08/460,979
Molten metal pump with vaned impeller
Inventors:
Ronald E. Gilbert, David M. Masarin, George S. Mordue
Patented Case
View Patent ↗
Granted: Jun 3, 1997
Filed: Jun 5, 1995
Inventors
Ronald E. Gilbert
David M. Masarin
George S. Mordue
Assignee (at issue)
Metaullics Systems Co., L.P.
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.