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发明名称
Transmission system
摘要
申请公布号
US2038240(A)
申请公布日期
1936.04.21
申请号
US19340752921
申请日期
1934.11.14
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
SCHELKUNOFF SERGEI A.
分类号
H01B11/18
主分类号
H01B11/18
代理机构
代理人
主权项
地址
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