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Application filed by Kaare W N BergfiledCriticalKaare W N Berg
Priority to NO781426ApriorityCriticalpatent/NO142373C/en
Publication of NO781426LpublicationCriticalpatent/NO781426L/en
Publication of NO142373BpublicationCriticalpatent/NO142373B/en
Publication of NO142373CpublicationCriticalpatent/NO142373C/en