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经营范围
发明名称
INTERACTIVE TEACHING APPARATUS
摘要
申请公布号
EP0203772(B1)
申请公布日期
1990.01.17
申请号
EP19860303831
申请日期
1986.05.20
申请人
SONY CORPORATION
发明人
STRASHUN, LEONID
分类号
G09B5/06;G09B7/04;G09B23/18
主分类号
G09B5/06
代理机构
代理人
主权项
地址
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