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发明名称
Dispositif de sécurité à fonctionnement automatique pour appareil de projection cinématographique ou photographique
摘要
申请公布号
FR678960(A)
申请公布日期
1930.04.07
申请号
FRD678960
申请日期
1928.11.20
申请人
发明人
DEBRIE ANDRE-LEON-VICTOR-CL
分类号
G03B21/16
主分类号
G03B21/16
代理机构
代理人
主权项
地址
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