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Priority claimed from SE8305817Aexternal-prioritypatent/SE438447B/sv
Application filed by Bjarne NilssonfiledCriticalBjarne Nilsson
Publication of NO852489LpublicationCriticalpatent/NO852489L/no
Publication of NO158122BpublicationCriticalpatent/NO158122B/no
Publication of NO158122CpublicationCriticalpatent/NO158122C/no