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Priority claimed from NO820433Aexternal-prioritypatent/NO162103C/no
Publication of NO832165LpublicationCriticalpatent/NO832165L/no
Application filed by Ici PlcfiledCriticalIci Plc
Priority to NO83832165ApriorityCriticalpatent/NO164778B/no
Publication of NO164778BpublicationCriticalpatent/NO164778B/no