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发明名称
Transmission system
摘要
申请公布号
US2282405(A)
申请公布日期
1942.05.12
申请号
US19390290090
申请日期
1939.08.14
申请人
ASSOCIATED ELECTRIC LABORATORIES, INC.
发明人
HERRICK ROSWELL H.
分类号
H04B3/20;H04M1/58;H04M9/08
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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