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经营范围
发明名称
Channel switching system
摘要
申请公布号
US4984252(A)
申请公布日期
1991.01.08
申请号
US19890419366
申请日期
1989.10.10
申请人
NEC CORPORATION
发明人
MORIMOTO, HIDEAKI
分类号
H04L1/22
主分类号
H04L1/22
代理机构
代理人
主权项
地址
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