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Priority claimed from FR8800763Aexternal-prioritypatent/FR2626283B1/en
Priority claimed from FR888802903Aexternal-prioritypatent/FR2628117B2/en
Application filed by Inst Francais Du PetrolefiledCriticalInst Francais Du Petrole
Application grantedgrantedCritical
Publication of ATE90721T1publicationCriticalpatent/ATE90721T1/en