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发明名称
Magazine-type photoelectric sound reproducer
摘要
申请公布号
US2466124(A)
申请公布日期
1949.04.05
申请号
US19430494605
申请日期
1943.07.14
申请人
OWENS FREEMAN H
发明人
OWENS FREEMAN H.
分类号
G11B25/10
主分类号
G11B25/10
代理机构
代理人
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