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发明名称
Charging method of voice letter service using intelligent network
摘要
申请公布号
KR100924220(B1)
申请公布日期
2009.11.02
申请号
KR20020060119
申请日期
2002.10.02
申请人
发明人
分类号
H04L12/14
主分类号
H04L12/14
代理机构
代理人
主权项
地址
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