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发明名称
Record changer
摘要
申请公布号
US2902285(A)
申请公布日期
1959.09.01
申请号
US19530393135
申请日期
1953.11.19
申请人
EMIL KNECHT
发明人
KNECHT EMIL
分类号
G11B17/02;G11B19/265
主分类号
G11B17/02
代理机构
代理人
主权项
地址
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