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发明名称
Dispositif pour régler automatiquement la grandeur de la boucle dans les appareils cinématographiques
摘要
申请公布号
FR704973(A)
申请公布日期
1931.05.29
申请号
FRD704973
申请日期
1930.01.27
申请人
发明人
OEHMICHEN ETIENNE
分类号
G03B1/56
主分类号
G03B1/56
代理机构
代理人
主权项
地址
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