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Application filed by Per G SkanckefiledCriticalPer G Skancke
Priority to NO811872ApriorityCriticalpatent/NO152143C/en
Publication of NO811872LpublicationCriticalpatent/NO811872L/en
Publication of NO152143BpublicationCriticalpatent/NO152143B/en
Publication of NO152143CpublicationCriticalpatent/NO152143C/en