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发明名称
Sound reproduction
摘要
申请公布号
US2251204(A)
申请公布日期
1941.07.29
申请号
US19410388355
申请日期
1941.04.14
申请人
THE CROSLEY CORPORATION
发明人
REID JOHN D.
分类号
G11B3/44;G11B3/48
主分类号
G11B3/44
代理机构
代理人
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地址
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