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发明名称
Method and System for Providing Multimedia Ring Back Tone Service by Using Call-side Switching Center
摘要
申请公布号
KR100646376(B1)
申请公布日期
2006.11.23
申请号
KR20040049090
申请日期
2004.06.28
申请人
发明人
分类号
H04W4/12;H04W88/18
主分类号
H04W4/12
代理机构
代理人
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地址
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