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发明名称
Perfectionnements apportés aux obturateurs des appareils pour la prise ou la projection d'images photographiques et plus spécialement d'images cinématographiques
摘要
申请公布号
FR716055(A)
申请公布日期
1931.12.14
申请号
FRD716055
申请日期
1931.04.25
申请人
发明人
BARBIER EMILE-PIERRE-LOUIS LE
分类号
G03B9/10
主分类号
G03B9/10
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代理人
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