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
CA882748A
Inventor
Lalu Jean-Pierre
Foulletier 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.)
Ugine Kuhlmann SA
Original Assignee
Ugine Kuhlmann SA
Publication date
Application grantedgrantedCritical
Publication of CA882748ApublicationCriticalpatent/CA882748A/en