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Publication date
Application filed by Paal Skipnes, Hegstad BjoernfiledCriticalPaal Skipnes
Priority to NO842143ApriorityCriticalpatent/NO157730C/no
Publication of NO842143LpublicationCriticalpatent/NO842143L/no
Publication of NO157730BpublicationCriticalpatent/NO157730B/no
Publication of NO157730CpublicationCriticalpatent/NO157730C/no