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经营范围
发明名称
CENTRALIZED EXCHANGE SYSTEM
摘要
申请公布号
JPS6348031(A)
申请公布日期
1988.02.29
申请号
JP19860191349
申请日期
1986.08.15
申请人
NEC CORP
发明人
TSUZUKI KAZUO;SHIMIZU TOMOYOSHI
分类号
H04L12/64
主分类号
H04L12/64
代理机构
代理人
主权项
地址
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