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发明名称
LOUDSPEAKER
摘要
申请公布号
CA358967(A)
申请公布日期
1936.07.07
申请号
CAD358967
申请日期
申请人
THE RADIO CORPORATION OF AMERICA
发明人
FREDERICK L. CREAGER;M. LEE MCMURTREY
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主分类号
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代理人
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