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
CA649663A
Inventor
Perrus Roger
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.)
Esso SA
Original Assignee
Esso Standard SA
Publication date
Application grantedgrantedCritical
Publication of CA649663ApublicationCriticalpatent/CA649663A/en