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 Beecham Group LtdfiledCriticalBeecham Group Ltd
Priority claimed from GB257173Aexternal-prioritypatent/GB1426072A/en
Publication of ZA74379BpublicationCriticalpatent/ZA74379B/en