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Priority claimed from DE2541742Aexternal-prioritypatent/DE2541742C2/en
Application filed by Hoechst AgfiledCriticalHoechst Ag
Publication of FI792741ApublicationCriticalpatent/FI792741A/en
Publication of FI65237BpublicationCriticalpatent/FI65237B/en
Application grantedgrantedCritical
Publication of FI65237CpublicationCriticalpatent/FI65237C/en