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
CA867245A
Inventor
O. Buhrmaster Bruce
P. Ericson 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.)
All Steel Equipment Inc
Original Assignee
All Steel Equipment Inc
Publication date
Application grantedgrantedCritical
Publication of CA867245ApublicationCriticalpatent/CA867245A/en