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发明名称
Phonograph
摘要
申请公布号
US2212672(A)
申请公布日期
1940.08.27
申请号
US19380239055
申请日期
1938.11.05
申请人
THOMAS A. EDISON, INCORPORATED
发明人
SOMERS RICHARD M.
分类号
G11B25/02
主分类号
G11B25/02
代理机构
代理人
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