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Priority claimed from SE8800351Aexternal-prioritypatent/SE459062B/en
Application filed by Bertil GranlundfiledCriticalBertil Granlund
Publication of NO893918LpublicationCriticalpatent/NO893918L/en
Publication of NO893918D0publicationCriticalpatent/NO893918D0/en
Publication of NO172565BpublicationCriticalpatent/NO172565B/en
Publication of NO172565CpublicationCriticalpatent/NO172565C/en