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经营范围
发明名称
Telegraph repeater
摘要
申请公布号
US2117723(A)
申请公布日期
1938.05.17
申请号
US19360080705
申请日期
1936.05.20
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
HYSKO JOHN L.
分类号
H04L5/16;H04L25/04
主分类号
H04L5/16
代理机构
代理人
主权项
地址
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