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Priority claimed from DE2452979Aexternal-prioritypatent/DE2452979C2/de
Application filed by Hoechst AgfiledCriticalHoechst Ag
Publication of ATA693976ApublicationCriticalpatent/ATA693976A/de
Application grantedgrantedCritical
Publication of AT349304BpublicationCriticalpatent/AT349304B/de