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发明名称
Electrostatic loud speaker
摘要
申请公布号
US2004736(A)
申请公布日期
1935.06.11
申请号
US19290352642
申请日期
1929.04.05
申请人
RADIO CORPORATION OF AMERICA
发明人
THOMAS ADOLPH A.
分类号
H04R19/00
主分类号
H04R19/00
代理机构
代理人
主权项
地址
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