Granted Patent
Utility
US 6,779,704 · App. 09/851,597
Friction stir welding of metal matrix composites, ferrous alloys, non-ferrous alloys, and superalloys using a superabrasive tool
Inventors:
Tracy W. Nelson, Carl D. Sorensen, Scott M. Packer, Paul Allen Felter
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: May 8, 2001
Inventors
Tracy W. Nelson
Carl D. Sorensen
Scott M. Packer
Paul Allen Felter
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.