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经营范围
发明名称
Mehrstufiger Fernsehniederfrequenzverstaerker
摘要
申请公布号
DE756009(C)
申请公布日期
1954.11.29
申请号
DE1934R090570D
申请日期
1934.05.09
申请人
OPTA RADIO A. G.
发明人
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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