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经营范围
发明名称
Telegraph repeater
摘要
申请公布号
US2667537(A)
申请公布日期
1954.01.26
申请号
US19510235458
申请日期
1951.07.06
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MAHONEY JOSEPH A.;REA WILTON T.;SUTLIFF CARLETON B.
分类号
H04L25/04;H04L25/20
主分类号
H04L25/04
代理机构
代理人
主权项
地址
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