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
CA614144A
Inventor
Mcpherson John
Brown Harry
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.)
Pegler Ltd
Original Assignee
Pegler Ltd
Publication date
Application grantedgrantedCritical
Publication of CA614144ApublicationCriticalpatent/CA614144A/en