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经营范围
发明名称
LOOP NETWORK SYSTEM
摘要
申请公布号
JPH0522315(A)
申请公布日期
1993.01.29
申请号
JP19910174951
申请日期
1991.07.16
申请人
NEC CORP
发明人
OTANI KEIICHI
分类号
H04L12/42
主分类号
H04L12/42
代理机构
代理人
主权项
地址
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