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发明名称
Carrier communication system
摘要
申请公布号
US2120994(A)
申请公布日期
1938.06.21
申请号
US19360060386
申请日期
1936.01.23
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
TIDD WARREN H.
分类号
H04M7/16
主分类号
H04M7/16
代理机构
代理人
主权项
地址
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