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Priority claimed from FR8401764Aexternal-prioritypatent/FR2559146B1/fr
Priority claimed from FR8500521Aexternal-prioritypatent/FR2576013B1/fr
Application filed by Hoechst FrancefiledCriticalHoechst France
Priority claimed from EP19850400156external-prioritypatent/EP0158541B1/de
Application grantedgrantedCritical
Publication of ATE31293T1publicationCriticalpatent/ATE31293T1/de