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Application filed by Olav DahlfiledCriticalOlav Dahl
Priority to NO792272ApriorityCriticalpatent/NO144497C/en
Publication of NO792272LpublicationCriticalpatent/NO792272L/en
Publication of NO144497BpublicationCriticalpatent/NO144497B/en
Publication of NO144497CpublicationCriticalpatent/NO144497C/en