Granted Patent
Utility
US 6,464,458 · App. 09/842,538
Molten metal impeller
Inventors:
Chris T. Vild, Mark A. Bright
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Apr 25, 2001
Inventors
Chris T. Vild
Mark A. Bright
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.