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经营范围
发明名称
Verstaerkeranordnung
摘要
申请公布号
DE621697(C)
申请公布日期
1935.11.12
申请号
DED621697D
申请日期
1930.07.29
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
H03H7/01
主分类号
H03H7/01
代理机构
代理人
主权项
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