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Priority claimed from PCT/NO1989/000083external-prioritypatent/WO1991002877A1/en
Application filed by Grorud Jernvarefab AsfiledCriticalGrorud Jernvarefab As
Publication of DK17992D0publicationCriticalpatent/DK17992D0/da
Publication of DK17992ApublicationCriticalpatent/DK17992A/da