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Priority claimed from FR8610736Aexternal-prioritypatent/FR2601996B1/fr
Priority claimed from FR8706465Aexternal-prioritypatent/FR2614930A2/fr
Application filed by Nergeco SafiledCriticalNergeco Sa
Priority claimed from EP87401694Aexternal-prioritypatent/EP0254639B1/de
Application grantedgrantedCritical
Publication of ATE57422T1publicationCriticalpatent/ATE57422T1/de