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
CA677750A
Inventor
E. Keller Ralph
L. Coy Calvin
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.)
KALAMAZOO Manufacturing Co
Original Assignee
KALAMAZOO Manufacturing Co
Publication date
Application grantedgrantedCritical
Publication of CA677750ApublicationCriticalpatent/CA677750A/en