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发明名称
Procédé et appareil de réglage de l'intensité des sons sur les copies des films sonores
摘要
申请公布号
FR715066(A)
申请公布日期
1931.11.25
申请号
FRD715066
申请日期
1931.04.10
申请人
发明人
MIHALY DENES VON
分类号
G11B7/28
主分类号
G11B7/28
代理机构
代理人
主权项
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