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发明名称
Capacity type pickup
摘要
申请公布号
US2465288(A)
申请公布日期
1949.03.22
申请号
US19440528840
申请日期
1944.03.31
申请人
RADIO CORPORATION OF AMERICA
发明人
SINNETT CHESTER M.
分类号
H04R19/06
主分类号
H04R19/06
代理机构
代理人
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