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
CA787818A
Inventor
M. Schneider Jack
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.)
Calmec Extruform Ltd
Original Assignee
Calmec Extruform Ltd
Publication date
Application grantedgrantedCritical
Publication of CA787818ApublicationCriticalpatent/CA787818A/en