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
CA059739A
Inventor
L. Grimsley Ralph
L. Every Richard
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.)
ConocoPhillips Co
Original Assignee
Continental Oil 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 Continental Oil CofiledCriticalContinental Oil Co
Priority to CA059739ApriorityCriticalpatent/CA920615A/en
Priority to CA139,579Aprioritypatent/CA940690A/en
Application grantedgrantedCritical
Publication of CA920615ApublicationCriticalpatent/CA920615A/en