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 GBGB9727364.3Aexternal-prioritypatent/GB9727364D0/en
Application filed by De Beers Uk LtdfiledCriticalDe Beers Uk Ltd
Publication of HK1020032A1publicationCriticalpatent/HK1020032A1/en
Publication of HK1020032BpublicationCriticalpatent/HK1020032B/en