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Application filed by Pentti KemppainenfiledCriticalPentti Kemppainen
Priority to NO911807ApriorityCriticalpatent/NO173222C/en
Publication of NO911807D0publicationCriticalpatent/NO911807D0/en
Publication of NO911807LpublicationCriticalpatent/NO911807L/en
Publication of NO173222BpublicationCriticalpatent/NO173222B/en
Publication of NO173222CpublicationCriticalpatent/NO173222C/en