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发明名称
Obturateur pour appareil de projection cinématographique
摘要
申请公布号
FR679630(A)
申请公布日期
1930.04.15
申请号
FRD679630
申请日期
1929.07.31
申请人
PATHE CINEMA
发明人
分类号
G03B9/10
主分类号
G03B9/10
代理机构
代理人
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