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Priority claimed from SE8604404Aexternal-prioritypatent/SE464471B/sv
Application filed by Erik Lindahl, Gunnar HovseniusfiledCriticalErik Lindahl
Publication of NO882592D0publicationCriticalpatent/NO882592D0/no
Publication of NO882592LpublicationCriticalpatent/NO882592L/no
Publication of NO170210BpublicationCriticalpatent/NO170210B/no
Publication of NO170210CpublicationCriticalpatent/NO170210C/no