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发明名称
Dispositif pour le réglage automatique de l'intensité lumineuse du tirage dans les tireuses de films
摘要
申请公布号
FR715721(A)
申请公布日期
1931.12.08
申请号
FRD715721
申请日期
1931.04.20
申请人
发明人
KUPFER REINHOLD
分类号
G03B27/16
主分类号
G03B27/16
代理机构
代理人
主权项
地址
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