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发明名称
Tableau magnétique scolaire
摘要
申请公布号
FR1144873(A)
申请公布日期
1957.10.18
申请号
FRD1144873
申请日期
1956.03.27
申请人
发明人
LASNEAU ROBERT-EMILE-HENRI
分类号
B43L1/04
主分类号
B43L1/04
代理机构
代理人
主权项
地址
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