Granted Patent
Utility
US 5,571,347 · App. 08/304,511
High strength MG-SI type aluminum alloy
Inventor:
S. Craig Bergsma
Patented Case
View Patent ↗
Granted: Nov 5, 1996
Filed: Sep 12, 1994
Inventor
S. Craig Bergsma
Assignee (at issue)
Northwest Aluminum 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.