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发明名称
A method for providing a ring back sound service in which a caller select ring back sound
摘要
申请公布号
KR100617537(B1)
申请公布日期
2006.09.01
申请号
KR20030064200
申请日期
2003.09.16
申请人
发明人
分类号
H04W4/16;H04W4/20;H04W8/18
主分类号
H04W4/16
代理机构
代理人
主权项
地址
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