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
CA891869A
Inventor
A. P. Soviche Gilles
M. E. A. Mace Edouard
Bues Jean-Pierre
F. Pavlin Cyrille
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.)
Entreprise de Recherches et dActivites Petrolieres SA
Bertin Technologies SAS
Original Assignee
Entreprise de Recherches et dActivites Petrolieres SA
Bertin et Cie SA
Publication date
Application grantedgrantedCritical
Publication of CA891869ApublicationCriticalpatent/CA891869A/en