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
CA639433A
Inventor
W. Trubey Philip
B. Bruce Ian
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.)
Alcan Research and Development Ltd
Original Assignee
Aluminium Laboratories Ltd
Publication date
Application grantedgrantedCritical
Publication of CA639433ApublicationCriticalpatent/CA639433A/en