| 发明名称 |
ARITHMETIC CARDS AND GAME UTILIZING SUCH |
| 摘要 |
A new and improved card specifies arithmetical relationships in a manner permitting a new and improved arithmetic game to be played for education or entertainment using a plurality of such cards.
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| 申请公布号 |
US3661392(A) |
申请公布日期 |
1972.05.09 |
| 申请号 |
USD3661392 |
申请日期 |
1970.08.10 |
| 申请人 |
THOMAS M. ABNEY |
发明人 |
THOMAS M. ABNEY |
| 分类号 |
A63F1/00;(IPC1-7):A63F1/02 |
主分类号 |
A63F1/00 |
| 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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