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发明名称
Phonograph
摘要
申请公布号
US2034245(A)
申请公布日期
1936.03.17
申请号
US19290334036
申请日期
1929.01.21
申请人
ORD MALCOLM L
发明人
ORD MALCOLM L.
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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