Granted Patent
Utility
US 5,198,045 · App. 07/699,540
Low density high strength Al-Li alloy
Inventors:
Alex Cho, Joseph R. Pickens
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: May 14, 1991
Inventors
Alex Cho
Joseph R. Pickens
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.