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发明名称
Amplificateur à contre-réaction
摘要
申请公布号
FR57970(E)
申请公布日期
1953.09.18
申请号
FRD57970
申请日期
1948.01.28
申请人
SOCIETE INDEPENDANTE DE TELEGRAPHIE SANS FIL
发明人
分类号
H03F1/36
主分类号
H03F1/36
代理机构
代理人
主权项
地址
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