Granted Patent
Utility
US 5,133,505 · App. 07/606,634
Separation of aluminum alloys
Inventors:
Gilbert F. Bourcier, Jack Lowdon
Patented Case
View Patent ↗
Granted: Jul 28, 1992
Filed: Oct 31, 1990
Inventors
Gilbert F. Bourcier
Jack Lowdon
Assignee (at issue)
Reynolds Metals 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.