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
Application filed by Ici LtdfiledCriticalIci Ltd
Priority claimed from AT0441880Aexternal-prioritypatent/AT371451B/de
Publication of ZA801022BpublicationCriticalpatent/ZA801022B/xx