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
CA654255A
Inventor
C. Pietsch William
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.)
Bucyrus Erie Company of Canada Ltd
Original Assignee
Bucyrus Erie Company of Canada Ltd
Publication date
Application grantedgrantedCritical
Publication of CA654255ApublicationCriticalpatent/CA654255A/en