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经营范围
发明名称
Machine didactique
摘要
申请公布号
FR1454461(A)
申请公布日期
1966.02.11
申请号
FR19650028086
申请日期
1965.08.12
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
分类号
G09B7/08
主分类号
G09B7/08
代理机构
代理人
主权项
地址
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