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经营范围
发明名称
Signal receiving system
摘要
申请公布号
US2034647(A)
申请公布日期
1936.03.17
申请号
US19300500468
申请日期
1930.12.06
申请人
RADIO CORPORATION OF AMERICA
发明人
BEERS GEORGE L.
分类号
H04B1/30
主分类号
H04B1/30
代理机构
代理人
主权项
地址
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