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
CA1146F
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.)
Albert J Burt Casgreen Manufacturing Co
Original Assignee
Albert J Burt Casgreen Manufacturing Co
Publication date
Priority to CA1146FpriorityCriticalpatent/CA1146S/en
Application grantedgrantedCritical
Publication of CA1146SpublicationCriticalpatent/CA1146S/en