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Priority claimed from GB838305593Aexternal-prioritypatent/GB8305593D0/en
Priority claimed from GB838314561Aexternal-prioritypatent/GB8314561D0/en
Application filed by Ici PlcfiledCriticalIci Plc
Priority claimed from EP84300943Aexternal-prioritypatent/EP0118241B1/en
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Publication of ATE30313T1publicationCriticalpatent/ATE30313T1/en