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
CA748908A
Inventor
Pflugfelder Bernard
Bennes Georges
Cazajous Claude
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.)
Societe Nationale des Petroles dAquitaine SA
Original Assignee
Societe Nationale des Petroles dAquitaine SA
Publication date
Application grantedgrantedCritical
Publication of CA748908ApublicationCriticalpatent/CA748908A/en