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Priority claimed from FR8519306Aexternal-prioritypatent/FR2594781B1/fr
Priority claimed from FR868602394Aexternal-prioritypatent/FR2594782B2/fr
Application filed by Elf FrancefiledCriticalElf France
Application grantedgrantedCritical
Publication of ATE52474T1publicationCriticalpatent/ATE52474T1/de