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发明名称
EXCHANGE SYSTEM
摘要
申请公布号
JPH09289546(A)
申请公布日期
1997.11.04
申请号
JP19960101404
申请日期
1996.04.23
申请人
NEC COMMUN SYST LTD
发明人
OGAWA HIROAKI
分类号
H04M3/42;H04M3/38;(IPC1-7):H04M3/42
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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