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Priority claimed from FI830740Aexternal-prioritypatent/FI72897C/en
Application filed by Jouko NiemifiledCriticalJouko Niemi
Publication of NO844362LpublicationCriticalpatent/NO844362L/en
Publication of NO157847BpublicationCriticalpatent/NO157847B/en
Publication of NO157847CpublicationCriticalpatent/NO157847C/en