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Application filed by Hans BrattrudfiledCriticalHans Brattrud
Priority to NO813473ApriorityCriticalpatent/NO151051C/en
Publication of NO813473LpublicationCriticalpatent/NO813473L/en
Publication of NO151051BpublicationCriticalpatent/NO151051B/en
Publication of NO151051CpublicationCriticalpatent/NO151051C/en