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发明名称
Amplifier system
摘要
申请公布号
US2151757(A)
申请公布日期
1939.03.28
申请号
US19350042821
申请日期
1935.09.30
申请人
RADIO CORPORATION OF AMERICA
发明人
GEORGE ROSCOE H.;HEIM HOWARD J.
分类号
H03D7/14
主分类号
H03D7/14
代理机构
代理人
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地址
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