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
CA844617A
Inventor
Caffiero Rodolphe
Poignant Pierre
Pillon Daniel
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 Progil SA
Original Assignee
Pechiney Progil SA
Publication date
Application grantedgrantedCritical
Publication of CA844617ApublicationCriticalpatent/CA844617A/en