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Priority claimed from GB1789168Aexternal-prioritypatent/GB1206662A/en
Application filed by Ici LtdfiledCriticalIci Ltd
Priority to DK8273ApriorityCriticalpatent/DK135730B/da
Publication of DK135730BpublicationCriticalpatent/DK135730B/da
Application grantedgrantedCritical
Publication of DK135730CpublicationCriticalpatent/DK135730C/da