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发明名称
Sound reproducing machine
摘要
申请公布号
US2658761(A)
申请公布日期
1953.11.10
申请号
US19480021973
申请日期
1948.04.19
申请人
REGINALD MORRIS
发明人
MORRIS REGINALD
分类号
G11B17/00
主分类号
G11B17/00
代理机构
代理人
主权项
地址
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