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Application filed by Fridtjof EdvardsenfiledCriticalFridtjof Edvardsen
Priority to NO842812ApriorityCriticalpatent/NO156382C/no
Publication of NO842812LpublicationCriticalpatent/NO842812L/no
Publication of NO156382BpublicationCriticalpatent/NO156382B/no
Publication of NO156382CpublicationCriticalpatent/NO156382C/no