Granted Patent
Utility
US 4,743,428 · App. 06/893,843
Method for agitating metals and producing alloys
Inventors:
Dale L. McRae, Robert D. H. Willans, Eric L. Mawer
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Aug 6, 1986
Inventors
Dale L. McRae
Robert D. H. Willans
Eric L. Mawer
Assignee (at issue)
Cominco, Ltd.
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.