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
CA816040A
Inventor
L. Anderson Ernest
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.)
SOUTH AFRICAN IRON AND STEEL INDUSTRIAL Corp Ltd
Original Assignee
SOUTH AFRICAN IRON AND STEEL INDUSTRIAL Corp Ltd
Publication date
Application grantedgrantedCritical
Publication of CA816040ApublicationCriticalpatent/CA816040A/en