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
CA798000A
Inventor
R. Gustavson Marvin
I. Miller Roger
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.)
Union Stock Yard and Transit Co
Original Assignee
Union Stock Yard and Transit Co
Publication date
Application grantedgrantedCritical
Publication of CA798000ApublicationCriticalpatent/CA798000A/en