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Priority claimed from DE2431951Aexternal-prioritypatent/DE2431951A1/de
Priority claimed from DE2436012Aexternal-prioritypatent/DE2436012A1/de
Priority claimed from AT155975Aexternal-prioritypatent/AT342033B/de
Application filed by Merck Patent GmbhfiledCriticalMerck Patent Gmbh
Priority to AT166377ApriorityCriticalpatent/ATA166377A/de
Publication of ATA166377ApublicationCriticalpatent/ATA166377A/de