Granted Patent
Utility
US 5,439,536 · App. 08/236,811
Method of minimizing strength anisotropy in aluminum-lithium alloy wrought product by cold rolling, stretching and aging
Inventor:
Alex Cho
Patented Case
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Granted: Aug 8, 1995
Filed: May 2, 1994
Inventor
Alex Cho
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.