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经营范围
发明名称
Procédé pour l'obtention directe d'images négatives ou positives, par des rayons chi, sur du papier opaque ou transparent, du celluloïd ou sur des matières similaires
摘要
申请公布号
FR749375(A)
申请公布日期
1933.07.22
申请号
FRD749375
申请日期
1933.01.20
申请人
发明人
WEGNER W. CARLOS
分类号
G03C5/16
主分类号
G03C5/16
代理机构
代理人
主权项
地址
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