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发明名称
Circuit arrangement
摘要
申请公布号
US2153778(A)
申请公布日期
1939.04.11
申请号
US19330668231
申请日期
1933.04.27
申请人
RADIO CORPORATION OF AMERICA
发明人
TRAVIS CHARLES
分类号
H03B5/10;H03D7/10
主分类号
H03B5/10
代理机构
代理人
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