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Application filed by Aake SvenssonfiledCriticalAake Svensson
Priority to NO792448ApriorityCriticalpatent/NO149670C/en
Publication of NO792448LpublicationCriticalpatent/NO792448L/en
Publication of NO149670BpublicationCriticalpatent/NO149670B/en
Publication of NO149670CpublicationCriticalpatent/NO149670C/en