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发明名称
Amplifier system
摘要
申请公布号
US2240060(A)
申请公布日期
1941.04.29
申请号
US19390309526
申请日期
1939.12.16
申请人
RADIO CORPORATION OF AMERICA
发明人
USSELMAN GEORGE L.
分类号
H03F3/52;H03F3/54
主分类号
H03F3/52
代理机构
代理人
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地址
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