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 GB868630740Aexternal-prioritypatent/GB8630740D0/en
Application filedfiledCritical
Priority claimed from IN1120DE1987external-prioritypatent/IN172497B/en
Publication of ZA879614BpublicationCriticalpatent/ZA879614B/xx