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发明名称
Telegraph test board circuit
摘要
申请公布号
US2103476(A)
申请公布日期
1937.12.28
申请号
US19360083830
申请日期
1936.06.06
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
LUCEK CHARLES W.
分类号
H04L12/04
主分类号
H04L12/04
代理机构
代理人
主权项
地址
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