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 GB47586/68Aexternal-prioritypatent/GB1269352A/en
Application filed by Ici LtdfiledCriticalIci Ltd
Publication of IL31932A0publicationCriticalpatent/IL31932A0/en
Publication of IL31932ApublicationCriticalpatent/IL31932A/en