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Priority claimed from PCT/US1999/028292external-prioritypatent/WO2000033204A1/en
Application filed by 北方電訊網絡有限公司filedCritical北方電訊網絡有限公司
Publication of HK1039990A1publicationCriticalpatent/HK1039990A1/xx
Publication of HK1039990BpublicationCriticalpatent/HK1039990B/zh