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Publication date
Priority claimed from NO88882685Aexternal-prioritypatent/NO882685L/en
Application filed by Kirsten Birkeland, Osvald BirkelandfiledCriticalKirsten Birkeland
Priority to NO905341ApriorityCriticalpatent/NO167954C/en
Publication of NO905341LpublicationCriticalpatent/NO905341L/en
Publication of NO905341D0publicationCriticalpatent/NO905341D0/en
Publication of NO167954BpublicationCriticalpatent/NO167954B/en
Publication of NO167954CpublicationCriticalpatent/NO167954C/en