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Priority claimed from DE2157607Aexternal-prioritypatent/DE2157607C3/en
Application filed by Hoechst AgfiledCriticalHoechst Ag
Priority to AT436675ApriorityCriticalpatent/AT342070B/en
Publication of ATA436675ApublicationCriticalpatent/ATA436675A/en
Application grantedgrantedCritical
Publication of AT342070BpublicationCriticalpatent/AT342070B/en