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Priority claimed from SE8701517Aexternal-prioritypatent/SE457270C/en
Application filed by Assa AbfiledCriticalAssa Ab
Publication of NO885486D0publicationCriticalpatent/NO885486D0/en
Publication of NO885486LpublicationCriticalpatent/NO885486L/en
Publication of NO167318BpublicationCriticalpatent/NO167318B/en
Publication of NO167318CpublicationCriticalpatent/NO167318C/en