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经营范围
发明名称
METHOD AND SYSTEM FOR PREVENTING FRAUD IN A TELECOMMUNICATIONS SYSTEM
摘要
申请公布号
EP1417827(A1)
申请公布日期
2004.05.12
申请号
EP20020759162
申请日期
2002.07.19
申请人
WORLDCOM, INC.
发明人
MARCHAND, DEAN, C.;SPRINGER, ARTHUR, LANCE
分类号
H04M15/00;H04M17/00;(IPC1-7):H04M15/00
主分类号
H04M15/00
代理机构
代理人
主权项
地址
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