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Priority claimed from SE8307059Aexternal-prioritypatent/SE436122B/en
Application filed by Sixten GjervaldsaeterfiledCriticalSixten Gjervaldsaeter
Publication of NO845161LpublicationCriticalpatent/NO845161L/en
Publication of NO157776BpublicationCriticalpatent/NO157776B/en
Publication of NO157776CpublicationCriticalpatent/NO157776C/en