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发明名称
Record-playing apparatus
摘要
申请公布号
US2850286(A)
申请公布日期
1958.09.02
申请号
US19540432234
申请日期
1954.05.25
申请人
NEIL DOLPHIN ROBERT
发明人
DOLPHIN ROBERT NEIL
分类号
G11B17/30
主分类号
G11B17/30
代理机构
代理人
主权项
地址
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