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发明名称
EXCHANGE CONTROL METHOD BY MEANS OF PROVISION OF COORDINATE TO SUBSCRIBER
摘要
申请公布号
JPH04129369(A)
申请公布日期
1992.04.30
申请号
JP19900250834
申请日期
1990.09.20
申请人
NEC CORP
发明人
NAKANO MASAAKI
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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