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Publication date
Priority claimed from GB41873/74Aexternal-prioritypatent/GB1522605A/en
Publication of NO764170LpublicationCriticalpatent/NO764170L/no
Application filed by Ici LtdfiledCriticalIci Ltd
Priority to NO764170ApriorityCriticalpatent/NO149666C/en
Publication of NO149666BpublicationCriticalpatent/NO149666B/en
Publication of NO149666CpublicationCriticalpatent/NO149666C/en