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 GB5108668Aexternal-prioritypatent/GB1249473A/en
Priority claimed from NO102369Aexternal-prioritypatent/NO137594C/en
Publication of NO760604LpublicationCriticalpatent/NO760604L/no
Application filed by Ici LtdfiledCriticalIci Ltd
Priority to NO760604ApriorityCriticalpatent/NO137595C/en
Publication of NO137595BpublicationCriticalpatent/NO137595B/en
Publication of NO137595CpublicationCriticalpatent/NO137595C/en