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发明名称
Perfectionnements aux procédés pour la fabrication des ardoises artificielles destinées aux écoliers
摘要
申请公布号
FR49124(E)
申请公布日期
1938.11.07
申请号
FRD49124
申请日期
1938.01.27
申请人
发明人
NARDI AUGUSTE
分类号
B43L1/02
主分类号
B43L1/02
代理机构
代理人
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