Granted Patent
Utility
US 6,325,869 · App. 09/231,135
Aluminum alloy extrusions having a substantially unrecrystallized structure
Inventors:
John Liu, Gary H. Bray, David A. Lukasak, Robert C. Pahl
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Jan 15, 1999
Inventors
John Liu
Gary H. Bray
David A. Lukasak
Robert C. Pahl
Assignee (at issue)
ALCOA INC.
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.