Granted Patent
Utility
US 4,431,467 · App. 06/407,761
Aging process for 7000 series aluminum base alloys
Inventors:
James T. Staley, Ralph R. Sawtell
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Aug 13, 1982
Inventors
James T. Staley
Ralph R. Sawtell
Assignee (at issue)
Aluminum Company of America
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.