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Filing date
Publication date
Application filed by Aake Wilhelm Hjertstrand, Agne Bertil WedinfiledCriticalAake Wilhelm Hjertstrand
Priority to NO780449ApriorityCriticalpatent/NO145446C/no
Publication of NO780449LpublicationCriticalpatent/NO780449L/no
Publication of NO145446BpublicationCriticalpatent/NO145446B/no
Publication of NO145446CpublicationCriticalpatent/NO145446C/no