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经营范围
发明名称
SOUND REPRODUCING SYSTEM
摘要
申请公布号
CA338237(A)
申请公布日期
1933.12.26
申请号
CAD338237
申请日期
申请人
THE WESTERN ELECTRIC COMPANY
发明人
EDWIN HUTCHISON SMYTHE
分类号
主分类号
代理机构
代理人
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地址
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