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Publication date
Application filed by Sigurd HeienfiledCriticalSigurd Heien
Priority to NO754401ApriorityCriticalpatent/NO137884C/no
Priority to JP4021176Aprioritypatent/JPS5284689A/ja
Publication of NO754401LpublicationCriticalpatent/NO754401L/no
Publication of NO137884BpublicationCriticalpatent/NO137884B/no
Publication of NO137884CpublicationCriticalpatent/NO137884C/no