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发明名称
Verfahren zur Herstellung von Tonaufzeichnungen
摘要
申请公布号
DE648021(C)
申请公布日期
1937.07.19
申请号
DE1935R094329D
申请日期
1935.09.28
申请人
HANS RADEMAKER
发明人
分类号
G11B9/00
主分类号
G11B9/00
代理机构
代理人
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