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发明名称
摘要
申请公布号
NL7009281(A)
申请公布日期
1970.12.29
申请号
NL19700009281
申请日期
1970.06.24
申请人
WESTERN ELECTRIC CO
发明人
分类号
H04L25/49;H03K5/01;H03M5/16;H04L27/14;H04L27/144;(IPC1-7):H04L27/10
主分类号
H04L25/49
代理机构
代理人
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地址
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