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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Publication date
Priority claimed from GB798573*[Aexternal-prioritypatent/GB1423659A/en
Application filed by Ici LtdfiledCriticalIci Ltd
Priority to AT892275ApriorityCriticalpatent/AT336888B/de
Publication of ATA516373ApublicationCriticalpatent/ATA516373A/de
Application grantedgrantedCritical
Publication of AT336883BpublicationCriticalpatent/AT336883B/de