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.)
Filing date
Publication date
Priority claimed from GB51225/73Aexternal-prioritypatent/GB1489871A/en
Application filed by Ici LtdfiledCriticalIci Ltd
Priority claimed from GB5122574Aexternal-prioritypatent/GB1524821A/en
Publication of IE40087LpublicationCriticalpatent/IE40087L/en
Publication of IE40087B1publicationCriticalpatent/IE40087B1/en