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
CA618583A
Inventor
D. Neyer Robert
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.)
Yarnall Waring Co
Original Assignee
Yarnall Waring Co
Publication date
Application grantedgrantedCritical
Publication of CA618583ApublicationCriticalpatent/CA618583A/en