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经营范围
发明名称
BIPOLAR SIGNAL DATA TRANSMISSION EQUIPMENT
摘要
申请公布号
JPH0410729(A)
申请公布日期
1992.01.14
申请号
JP19900110276
申请日期
1990.04.27
申请人
NEC CORP
发明人
TATEYAMA SHINJI
分类号
H04L25/02
主分类号
H04L25/02
代理机构
代理人
主权项
地址
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