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
CA785124A
Inventor
G. Blevens Bertram
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.)
W M CISSELL Manufacturing Co
Original Assignee
W M CISSELL Manufacturing Co
Publication date
Application grantedgrantedCritical
Publication of CA785124ApublicationCriticalpatent/CA785124A/en