Granted Patent
Utility
US 6,521,864 · App. 09/755,051
Method and apparatus for the laser cutting of mild steel or structural steel with a multifocus optical component
Inventors:
Christophe Bertez, Jean Hamy, Olivier Matile
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Jan 8, 2001
Inventors
Christophe Bertez
Jean Hamy
Olivier Matile
Assignee (at issue)
L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude
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.