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发明名称
Perfectionnements apportés à la réalisation des chambres noires et des projecteurs d'appareils utilisés pour la cinématographie en couleurs
摘要
申请公布号
FR723931(A)
申请公布日期
1932.04.18
申请号
FRD723931
申请日期
1931.10.08
申请人
发明人
HAWORTH-BOOTH
分类号
G03B33/16
主分类号
G03B33/16
代理机构
代理人
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