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经营范围
发明名称
Means for neutralizing sound distortion
摘要
申请公布号
US2107135(A)
申请公布日期
1938.02.01
申请号
US19290357861
申请日期
1929.04.24
申请人
WESLEY WILSON
发明人
WILSON WESLEY
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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