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发明名称
Dispositif d'escamotage du film pour appareils de projection fixe
摘要
申请公布号
FR1001755(A)
申请公布日期
1952.02.27
申请号
FRD1001755
申请日期
1949.12.01
申请人
发明人
CAZES PAUL
分类号
G03B1/18
主分类号
G03B1/18
代理机构
代理人
主权项
地址
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