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经营范围
发明名称
Sound reproducing apparatus
摘要
申请公布号
US2504587(A)
申请公布日期
1950.04.18
申请号
US19460669476
申请日期
1946.05.14
申请人
SECUNDINO REY
发明人
REY SECUNDINO
分类号
G11B15/02
主分类号
G11B15/02
代理机构
代理人
主权项
地址
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