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发明名称
Automatic phonograph
摘要
申请公布号
US1880760(A)
申请公布日期
1932.10.04
申请号
US19290336975
申请日期
1929.02.02
申请人
BRYANT ROY B
发明人
BRYANT ROY B.
分类号
G11B17/04
主分类号
G11B17/04
代理机构
代理人
主权项
地址
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