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发明名称
Transmission system
摘要
申请公布号
US1762768(A)
申请公布日期
1930.06.10
申请号
US19260145170
申请日期
1926.10.30
申请人
BELL TELEPHONE LABORATORIES INCORPORATED
发明人
DICKIESON ALTON C.
分类号
H04B3/20
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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