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
CA724346A
Inventor
D. Robertson John
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.)
MOUNT HOPE MACHINERY Co Ltd
Original Assignee
MOUNT HOPE MACHINERY Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA724346ApublicationCriticalpatent/CA724346A/en