Granted Patent
Utility
US 4,797,165 · App. 06/685,731
Aluminum-lithium alloys having improved corrosion resistance and method
Inventors:
Philip E. Bretz, Ralph R. Sawtell, Warren H. Hunt, Jr.
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Dec 24, 1984
Inventors
Philip E. Bretz
Ralph R. Sawtell
Warren H. Hunt, Jr.
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.