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
CA220,502A
Inventor
David A. Withrow
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.)
Production Machinery Corp
Original Assignee
Production Machinery Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CA144,911Aexternal-prioritypatent/CA971089A/en
Application filed by Production Machinery CorpfiledCriticalProduction Machinery Corp
Priority to CA220,502ApriorityCriticalpatent/CA975274A/en
Application grantedgrantedCritical
Publication of CA975274ApublicationCriticalpatent/CA975274A/en