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发明名称
Méthode et matériel d'enseignement par voyants sur panneaux avec mouvement de disques et de bandes
摘要
申请公布号
FR1316483(A)
申请公布日期
1963.02.01
申请号
FR1961972000032
申请日期
1961.08.02
申请人
发明人
LUC-CAYOL FIRMIN
分类号
G09B1/18
主分类号
G09B1/18
代理机构
代理人
主权项
地址
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