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Application filed by Per Christian Hansen, Johannes OestensenfiledCriticalPer Christian Hansen
Priority to NO750187ApriorityCriticalpatent/NO138257C/en
Publication of NO750187LpublicationCriticalpatent/NO750187L/no
Publication of NO138257BpublicationCriticalpatent/NO138257B/en
Publication of NO138257CpublicationCriticalpatent/NO138257C/en