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经营范围
发明名称
LINE SWITCHING METHOD
摘要
申请公布号
JPH0554750(A)
申请公布日期
1993.03.05
申请号
JP19910233792
申请日期
1991.08.22
申请人
NEC CORP
发明人
NAKA YOSHIHIRO
分类号
H01H9/54
主分类号
H01H9/54
代理机构
代理人
主权项
地址
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