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Application filed by Knut WintherfiledCriticalKnut Winther
Priority to NO832799ApriorityCriticalpatent/NO153562C/en
Publication of NO832799LpublicationCriticalpatent/NO832799L/en
Publication of NO153562BpublicationCriticalpatent/NO153562B/en
Publication of NO153562CpublicationCriticalpatent/NO153562C/en