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Priority claimed from FR8616143Aexternal-prioritypatent/FR2607132B1/en
Priority claimed from FR8702140Aexternal-prioritypatent/FR2611199B1/en
Priority claimed from FR8710567Aexternal-prioritypatent/FR2618427B3/en
Application filed by AtochemfiledCriticalAtochem
Priority claimed from EP19870402375external-prioritypatent/EP0272945B1/en
Application grantedgrantedCritical
Publication of ATE65488T1publicationCriticalpatent/ATE65488T1/en