Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from GB4269472Aexternal-prioritypatent/GB1387504A/en
Application filed by Ici LtdfiledCriticalIci Ltd
Priority to DK32575ApriorityCriticalpatent/DK32575A/da
Publication of DK32575ApublicationCriticalpatent/DK32575A/da