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
CA867944A
Inventor
H. Harris John
J. Stead Norman
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.)
CONSOLIDATED TIN SMELTERS Ltd
Original Assignee
CONSOLIDATED TIN SMELTERS Ltd
Publication date
Application grantedgrantedCritical
Publication of CA867944ApublicationCriticalpatent/CA867944A/en