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发明名称
Magnetic pick-up
摘要
申请公布号
US2086415(A)
申请公布日期
1937.07.06
申请号
US19330703742
申请日期
1933.12.23
申请人
RADIO CORPORATION OF AMERICA
发明人
GUEDON EMILE CHARLES
分类号
H04R1/16;H04R11/08
主分类号
H04R1/16
代理机构
代理人
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地址
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