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发明名称
Dispositif tourne-pages pour machines à enseigner
摘要
申请公布号
FR1481572(A)
申请公布日期
1967.05.19
申请号
FR19660063454
申请日期
1966.05.31
申请人
发明人
BARRALON JACQUES
分类号
G09B3/04
主分类号
G09B3/04
代理机构
代理人
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