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发明名称
Teaching method and system
摘要
申请公布号
GB9827157(D0)
申请公布日期
1999.02.03
申请号
GB19980027157
申请日期
1998.12.09
申请人
TOKHEIM CORPORATION
发明人
分类号
G09B5/02;G09B5/06;G09B5/14;G09B7/02;G09B7/08
主分类号
G09B5/02
代理机构
代理人
主权项
地址
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