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Priority claimed from FR8804962Aexternal-prioritypatent/FR2630104B1/fr
Priority claimed from FR8811968Aexternal-prioritypatent/FR2636455A1/fr
Application filed by Elf AquitainefiledCriticalElf Aquitaine
Priority claimed from EP89400842Aexternal-prioritypatent/EP0337837B1/de
Application grantedgrantedCritical
Publication of ATE55984T1publicationCriticalpatent/ATE55984T1/de