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发明名称
Record changing mechanism for phonographs
摘要
申请公布号
US2371362(A)
申请公布日期
1945.03.13
申请号
US19400331327
申请日期
1940.04.24
申请人
FARNSWORTH TELEVISION & RADIO CORPORATION
发明人
SMALL ANNA M.
分类号
G11B17/16
主分类号
G11B17/16
代理机构
代理人
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地址
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