Granted Patent
Utility
US 6,565,684 · App. 09/766,674
Manufacturing process for a hollow pressure vessel made of AlZnMgCu alloy
Inventors:
Christophe Sigli, Pierre Sainfort
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Jan 23, 2001
Inventors
Christophe Sigli
Pierre Sainfort
Assignee (at issue)
Societe Metallurgique de Gerzat
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.