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经营范围
发明名称
VOCABULARY CARD SYSTEMS
摘要
申请公布号
IL98796(D0)
申请公布日期
1992.07.15
申请号
IL19910098796
申请日期
1991.07.11
申请人
JOSEF KATZ
发明人
分类号
G09B;G09B1/00;G09B11/00;G09B19/00;(IPC1-7):G09B/
主分类号
G09B
代理机构
代理人
主权项
地址
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