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
CA599956A
Inventor
H. Dorman Hugh
W. Gunning Alfred
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.)
MULTI-LIFT Co
Original Assignee
MULTI-LIFT Co
Publication date
Application grantedgrantedCritical
Publication of CA599956ApublicationCriticalpatent/CA599956A/en