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Publication of NO791310LpublicationCriticalpatent/NO791310L/no
Application filed by Kjell Budal, Johannes FalnesfiledCriticalKjell Budal
Priority to NO791310ApriorityCriticalpatent/NO145482C/no
Publication of NO145482BpublicationCriticalpatent/NO145482B/no
Publication of NO145482CpublicationCriticalpatent/NO145482C/no