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
CA808852A
Inventor
N. Anderson Marshall
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.)
Sellstrom Manufacturing Co
Original Assignee
Sellstrom Manufacturing Co
Publication date
Application grantedgrantedCritical
Publication of CA808852ApublicationCriticalpatent/CA808852A/en