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发明名称
SOUND REPRODUCING DEVICE
摘要
申请公布号
CA404903(A)
申请公布日期
1942.05.19
申请号
CAD404903
申请日期
申请人
PHILCO RADIO AND TELEVISION CORPORATION
发明人
JOSEPH ABNER BRIGGS
分类号
主分类号
代理机构
代理人
主权项
地址
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