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发明名称
Procédé et dispositif d'optique de lecteur de son pour appareil einématographique
摘要
申请公布号
FR979556(A)
申请公布日期
1951.04.27
申请号
FRD979556
申请日期
1948.12.02
申请人
CINERIC
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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