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Priority claimed from GB9119132Aexternal-prioritypatent/GB2259295A/en
Application filed by Wallace Mcdonald GeorgefiledCriticalWallace Mcdonald George
Publication of HK1011321A1publicationCriticalpatent/HK1011321A1/zh
Publication of HK1011321BpublicationCriticalpatent/HK1011321B/zh