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发明名称
Perfectionnements aux procédés de fabrication des mines de crayons et objets analogues et produits obtenus
摘要
申请公布号
FR896334(A)
申请公布日期
1945.02.19
申请号
FRD896334
申请日期
1943.07.12
申请人
发明人
MIGNOT JEAN
分类号
B43K19/18
主分类号
B43K19/18
代理机构
代理人
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