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经营范围
发明名称
Appareil d'enseignement
摘要
申请公布号
FR1405721(A)
申请公布日期
1965.07.09
申请号
FR19640985836
申请日期
1964.08.21
申请人
发明人
STILLIT GERALD BARRY
分类号
G09B7/06
主分类号
G09B7/06
代理机构
代理人
主权项
地址
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