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经营范围
发明名称
High frequency amplifier
摘要
申请公布号
US2084475(A)
申请公布日期
1937.06.22
申请号
US19340759645
申请日期
1934.12.29
申请人
RADIO CORPORATION OF AMERICA
发明人
BRADEN RENE A.
分类号
H03F1/50
主分类号
H03F1/50
代理机构
代理人
主权项
地址
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