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
CA610673A
Inventor
E. Kettell Philip
J. Evans Andrew
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.)
E A ADAMS AND SONS
Original Assignee
E A ADAMS AND SONS
Publication date
Application grantedgrantedCritical
Publication of CA610673ApublicationCriticalpatent/CA610673A/en