| 发明名称 |
Child{3 s play block with card-retaining tangs |
| 摘要 |
A child's play block having a continuous periphery of material width with a central strengthening web and card retaining tangs adjacent thereto for the reception of picture card inserts which are color coded to the color of the block.
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| 申请公布号 |
US4077153(A) |
申请公布日期 |
1978.03.07 |
| 申请号 |
US19730380610 |
申请日期 |
1973.07.19 |
| 申请人 |
KLISAN, INC. |
发明人 |
DUNBAR, GEORGE W.;KRUMHOLZ, JERROLD J. |
| 分类号 |
A63H33/04;(IPC1-7):A63H33/04 |
主分类号 |
A63H33/04 |
| 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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