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发明名称
Miniature phonograph
摘要
申请公布号
US2043687(A)
申请公布日期
1936.06.09
申请号
US19330685217
申请日期
1933.08.15
申请人
VOICES, INCORPORATED
发明人
WILHELM JOHN H.
分类号
G11B33/06
主分类号
G11B33/06
代理机构
代理人
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