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
CA770324A
Inventor
N. Hubbell Charles
R. Noye Paul
H. Devonshire William
F. Parker Humphrey
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.)
Columbus McKinnon Ltd
Original Assignee
Columbus McKinnon Ltd
Publication date
Application grantedgrantedCritical
Publication of CA770324ApublicationCriticalpatent/CA770324A/en