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发明名称
Phonograph
摘要
申请公布号
US2793864(A)
申请公布日期
1957.05.28
申请号
US19520320025
申请日期
1952.11.12
申请人
MCGRAW-EDISON COMPANY
发明人
DIETZ EDWARD A.
分类号
G11B3/60;G11B17/022
主分类号
G11B3/60
代理机构
代理人
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地址
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