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Application filed by Olav KvaalefiledCriticalOlav Kvaale
Priority to NO823661ApriorityCriticalpatent/NO151453C/no
Publication of NO823661LpublicationCriticalpatent/NO823661L/no
Publication of NO151453BpublicationCriticalpatent/NO151453B/no
Publication of NO151453CpublicationCriticalpatent/NO151453C/no