Granted Patent
Utility
US 4,832,758 · App. 07/082,414
Producing combined high strength and high corrosion resistance in Al-Zn-MG-CU alloys
Inventor:
Melvin H. Brown
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Aug 6, 1987
Inventor
Melvin H. Brown
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.