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 GB878725838Aexternal-prioritypatent/GB8725838D0/en
Application filed by Ici PlcfiledCriticalIci Plc
Priority to ZA889137ApriorityCriticalpatent/ZA889137B/en
Publication of ZA889137BpublicationCriticalpatent/ZA889137B/en