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 to FI781546ApriorityCriticalpatent/FI781546A/fi
Publication of FI781546ApublicationCriticalpatent/FI781546A/fi