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Priority claimed from DE2157607Aexternal-prioritypatent/DE2157607C3/de
Application filed by Hoechst AgfiledCriticalHoechst Ag
Priority to AT436575ApriorityCriticalpatent/AT336632B/de
Publication of ATA436575ApublicationCriticalpatent/ATA436575A/de
Application grantedgrantedCritical
Publication of AT336632BpublicationCriticalpatent/AT336632B/de