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发明名称
Regenerative sound recording device
摘要
申请公布号
US2033476(A)
申请公布日期
1936.03.10
申请号
US19300504713
申请日期
1930.12.26
申请人
BERNARD KWARTIN
发明人
KWARTIN BERNARD
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
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