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发明名称
Check controlled phonograph record playing and selecting mechanism
摘要
申请公布号
US2545117(A)
申请公布日期
1951.03.13
申请号
US19490080309
申请日期
1949.03.08
申请人
PAUL B. EATON
发明人
STARNES GEORGE F.
分类号
G07F17/30
主分类号
G07F17/30
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代理人
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