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Application filed by Sigurd HeienfiledCriticalSigurd Heien
Priority to NO752184ApriorityCriticalpatent/NO136517C/no
Publication of NO752184LpublicationCriticalpatent/NO752184L/no
Publication of NO136517BpublicationCriticalpatent/NO136517B/no
Publication of NO136517CpublicationCriticalpatent/NO136517C/no