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Application filed by Magyar Szenhidrogenipari, Nitrokemia Ipartelepek, Dunai Koeolajipari VallalatfiledCriticalMagyar Szenhidrogenipari
Priority to HUNA001142priorityCriticalpatent/HU179552B/en
Publication of HU179552BpublicationCriticalpatent/HU179552B/en