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Application filed by Ingolv HellandfiledCriticalIngolv Helland
Priority to NO854938ApriorityCriticalpatent/NO157858C/en
Publication of NO854938LpublicationCriticalpatent/NO854938L/en
Publication of NO157858BpublicationCriticalpatent/NO157858B/en
Publication of NO157858CpublicationCriticalpatent/NO157858C/en