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发明名称
Electrical apparatus
摘要
申请公布号
US2124044(A)
申请公布日期
1938.07.19
申请号
US19340718354
申请日期
1934.03.31
申请人
RADIO CORPORATION OF AMERICA
发明人
VANCE ARTHUR W.
分类号
H04N5/16
主分类号
H04N5/16
代理机构
代理人
主权项
地址
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