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.)
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.)
Union Carbide Canada Ltd
Original Assignee
Electro Metallurgical Company of Canada Ltd
Publication date
Application grantedgrantedCritical
Publication of CA417253ApublicationCriticalpatent/CA417253A/en