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
CA608061A
Inventor
W. Macmillan Charles
W. Pierce Frank
O. Holaday Harold
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.)
Bear Manufacturing Co
Original Assignee
Bear Manufacturing Co
Publication date
Application grantedgrantedCritical
Publication of CA608061ApublicationCriticalpatent/CA608061A/en