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Publication date
Application filed by Karl BjoerstadfiledCriticalKarl Bjoerstad
Priority to NO831405ApriorityCriticalpatent/NO152722C/no
Publication of NO831405LpublicationCriticalpatent/NO831405L/no
Publication of NO152722BpublicationCriticalpatent/NO152722B/no
Publication of NO152722CpublicationCriticalpatent/NO152722C/no