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发明名称
Broadcast channel group selector system
摘要
申请公布号
US2036235(A)
申请公布日期
1936.04.07
申请号
US19320601726
申请日期
1932.03.29
申请人
RADIO CORPORATION OF AMERICA
发明人
RACKEY CHESTER A.
分类号
H04H60/04
主分类号
H04H60/04
代理机构
代理人
主权项
地址
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