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Priority claimed from SE8601650Aexternal-prioritypatent/SE457367B/en
Application filed by Barrier HbfiledCriticalBarrier Hb
Publication of NO875159D0publicationCriticalpatent/NO875159D0/en
Publication of NO875159LpublicationCriticalpatent/NO875159L/en
Publication of NO165889BpublicationCriticalpatent/NO165889B/en
Publication of NO165889CpublicationCriticalpatent/NO165889C/en