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
CA828686A
Inventor
P. Gravenor Conrad
Rigg Tyson
R. Huffman Henry
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.)
Peace River Mining and Smelting Ltd
Original Assignee
Peace River Mining and Smelting Ltd
Publication date
Application grantedgrantedCritical
Publication of CA828686ApublicationCriticalpatent/CA828686A/en