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发明名称
Perfectionnements aux appareils cinématographiques
摘要
申请公布号
FR839371(A)
申请公布日期
1939.04.03
申请号
FRD839371
申请日期
1938.06.16
申请人
PATHE CINEMA, ANCIENS ETABLISSEMENTS PATHE FRERES
发明人
分类号
G03B1/42
主分类号
G03B1/42
代理机构
代理人
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