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发明名称
Phonograph
摘要
申请公布号
US2941810(A)
申请公布日期
1960.06.21
申请号
US19570635008
申请日期
1957.01.18
申请人
ROBERT WAGNER
发明人
WAGNER ROBERT
分类号
G11B3/09;G11B3/36;G11B17/028
主分类号
G11B3/09
代理机构
代理人
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地址
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