| 发明名称 |
Aid for learning words of a foreign language takes the form of a template with flexible slidable elements which expose or cover one or more words |
| 摘要 |
<p>The aid for learning words of a foreign language, for example, takes the form of a template with flexible slidable elements which expose or cover one or more words.</p> |
| 申请公布号 |
DE20309007(U1) |
申请公布日期 |
2003.12.04 |
| 申请号 |
DE2003209007U |
申请日期 |
2003.06.11 |
| 申请人 |
BURK, MARA |
发明人 |
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| 分类号 |
G09B19/06;(IPC1-7):G09B19/08 |
主分类号 |
G09B19/06 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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