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
CA646857A
Inventor
Hadfield Neville
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.)
EJ Wright Central Ltd
Original Assignee
EJ Wright Central Ltd
Publication date
Application grantedgrantedCritical
Publication of CA646857ApublicationCriticalpatent/CA646857A/en