Granted Patent
Utility
US 5,364,078 · App. 08/021,533
Gas dispersion apparatus for molten aluminum refining
Inventor:
John F. Pelton
Patented Case
View Patent ↗
Granted: Nov 15, 1994
Filed: Feb 19, 1993
Inventor
John F. Pelton
Assignee (at issue)
Praxair Technology, Inc.
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.