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经营范围
发明名称
Procédé de fixation d'écran filtre, pare-soleil ou lentille additionnelle à une monture optique d'appareil photographique ou caméra de prise de vue
摘要
申请公布号
FR979535(A)
申请公布日期
1951.04.27
申请号
FRD979535
申请日期
1942.09.09
申请人
发明人
ROYET PAUL-FERDINAND
分类号
G03B17/12
主分类号
G03B17/12
代理机构
代理人
主权项
地址
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