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发明名称
ELECTRONIC EXCHANGE
摘要
申请公布号
JPH05236138(A)
申请公布日期
1993.09.10
申请号
JP19920033478
申请日期
1992.02.20
申请人
NEC CORP
发明人
SEKIGUCHI KATSUMI
分类号
H04L29/06;H04M7/06;H04Q3/00;H04Q3/545;(IPC1-7):H04M7/06
主分类号
H04L29/06
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