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发明名称
Radio-acoustic apparatus
摘要
申请公布号
US2311491(A)
申请公布日期
1943.02.16
申请号
US19410404896
申请日期
1941.07.31
申请人
RADIO CORPORATION OF AMERICA
发明人
TURNER ALFRED H.
分类号
H04B1/034
主分类号
H04B1/034
代理机构
代理人
主权项
地址
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