Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA895789A
Inventor
Percheron Jean-Claude
Septier Louis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pechiney SA
Original Assignee
Pechiney SA
Publication date
Application grantedgrantedCritical
Publication of CA895789ApublicationCriticalpatent/CA895789A/en