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发明名称
Phonograph selector system
摘要
申请公布号
US2634402(A)
申请公布日期
1953.04.07
申请号
US19480005854
申请日期
1948.02.02
申请人
A M I INCORPORATED
发明人
VANDERZEE HARRY HERBERT;MCCALLUM ROBERT A.
分类号
G07F17/30;G11B17/22
主分类号
G07F17/30
代理机构
代理人
主权项
地址
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