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发明名称
ELECTRONIC EXCHANGE
摘要
申请公布号
JPH0537636(A)
申请公布日期
1993.02.12
申请号
JP19910211405
申请日期
1991.07.30
申请人
NEC ENG LTD
发明人
MOCHIZUKI AKIRA
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
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