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.)
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.)
Empire Oil Tool Co
Original Assignee
Empire Oil Tool Co
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
Application filed by Empire Oil Tool CofiledCriticalEmpire Oil Tool Co
Priority to CA114,623ApriorityCriticalpatent/CA948483A/en
Application grantedgrantedCritical
Publication of CA948483ApublicationCriticalpatent/CA948483A/en