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发明名称
DEMONSTRATION TOOL
摘要
申请公布号
GB2219121(B)
申请公布日期
1992.04.01
申请号
GB19890009740
申请日期
1989.04.27
申请人
* SONY CORPORATION
发明人
NORIO * MASHIMO
分类号
G09B19/00;G09B1/22;G09F5/02;G09F7/10;G09F11/00
主分类号
G09B19/00
代理机构
代理人
主权项
地址
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