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发明名称
Procédé et dispositif pour régulariser le noircissement de l'impression sonore et de l'image à projeter dans les enregistrements de films sonores
摘要
申请公布号
FR749658(A)
申请公布日期
1933.07.27
申请号
FRD749658
申请日期
1933.01.28
申请人
KLANGFILM G. M. B. H.
发明人
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
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地址
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