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 GB4679775Aexternal-prioritypatent/GB1568057A/en
Application filed by C D West, J C H GeisowfiledCriticalC D West
Publication of IN145844BpublicationCriticalpatent/IN145844B/en
