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发明名称
EXCHANGE NETWORK CHARGING SYSTEM
摘要
申请公布号
JPH04122166(A)
申请公布日期
1992.04.22
申请号
JP19900243157
申请日期
1990.09.13
申请人
NEC CORP
发明人
FURUKAWA MASATO
分类号
H04M15/08
主分类号
H04M15/08
代理机构
代理人
主权项
地址
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