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 - Lifetime
Application number
CA77909F
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.)
Lamson and Sessions Co
Original Assignee
Lamson and Sessions Co
Publication date
Priority to CA77909FpriorityCriticalpatent/CA77909S/en
Application grantedgrantedCritical
Publication of CA77909SpublicationCriticalpatent/CA77909S/en