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Priority claimed from DE3316494Aexternal-prioritypatent/DE3316494A1/de
Priority claimed from AT172983Aexternal-prioritypatent/AT378358B/de
Application filed by Chemie Linz Ag, Lentia GmbhfiledCriticalChemie Linz Ag
Publication of IN160950BpublicationCriticalpatent/IN160950B/en