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经营范围
发明名称
Amplificateur à semi-conducteur
摘要
申请公布号
FR1023435(A)
申请公布日期
1953.03.18
申请号
FRD1023435
申请日期
1950.07.31
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
H03F3/191
主分类号
H03F3/191
代理机构
代理人
主权项
地址
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