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
CA823855A
Inventor
K. Snyder Marvin
E. Bradley James
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.)
Butler Manufacturing Co
Original Assignee
Butler Manufacturing Co
Publication date
Application grantedgrantedCritical
Publication of CA823855ApublicationCriticalpatent/CA823855A/en