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Application filed by Sigurd FongenfiledCriticalSigurd Fongen
Priority to NO893640ApriorityCriticalpatent/NO171869C/no
Publication of NO893640D0publicationCriticalpatent/NO893640D0/no
Publication of NO893640LpublicationCriticalpatent/NO893640L/no
Publication of NO171869BpublicationCriticalpatent/NO171869B/no
Publication of NO171869CpublicationCriticalpatent/NO171869C/no