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发明名称
Record changer
摘要
申请公布号
US2713492(A)
申请公布日期
1955.07.19
申请号
US19510216155
申请日期
1951.03.17
申请人
MOTOROLA, INC.
发明人
SMARDO FRANK
分类号
G11B17/16
主分类号
G11B17/16
代理机构
代理人
主权项
地址
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