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经营范围
发明名称
Verstaerker mit negativer Rueckkopplung
摘要
申请公布号
DE761814(C)
申请公布日期
1953.03.16
申请号
DE1934J051216D
申请日期
1934.12.14
申请人
WESTERN ELECTRIC COMPANY
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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