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发明名称
Automatic phonograph
摘要
申请公布号
US2488137(A)
申请公布日期
1949.11.15
申请号
US19410416747
申请日期
1941.10.27
申请人
DONALDSON MORRISON JAMES L
发明人
MORRISON JAMES L. DONALDSON
分类号
G11B17/16;G11B17/18
主分类号
G11B17/16
代理机构
代理人
主权项
地址
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