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Priority claimed from DE2335170Aexternal-prioritypatent/DE2335170C2/de
Application filed by Hoechst AgfiledCriticalHoechst Ag
Priority to AT543975ApriorityCriticalpatent/AT333303B/de
Publication of ATA543975ApublicationCriticalpatent/ATA543975A/de
Application grantedgrantedCritical
Publication of AT333303BpublicationCriticalpatent/AT333303B/de