Granted Patent
Utility
US 6,521,867 · App. 09/850,106
Flux-cored wire for gas-flow-shielded welding
Inventors:
Christian Bonnet, Bruno Leduey
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: May 8, 2001
Inventors
Christian Bonnet
Bruno Leduey
Assignee (at issue)
La Soudure Autogene Francaise
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.