| 发明名称 |
DEVICE FOR EDUCATION OF OSMOSIS PHENOMENON |
| 摘要 |
Disclosed is a plastics box(100) of colorless and transparent rectangular shape of regular size. The artificial bead is mixed with (s) and (L) on regular rate after a net is fixed in center the artificial bead is sealed up is placed in a part of the plastic box(100).
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| 申请公布号 |
KR0119562(B1) |
申请公布日期 |
1997.10.27 |
| 申请号 |
KR19940022240 |
申请日期 |
1994.09.01 |
| 申请人 |
CHO, JUNG-ILL |
发明人 |
CHO, JUNG-ILL |
| 分类号 |
G09B23/24;(IPC1-7):G09B23/24 |
主分类号 |
G09B23/24 |
| 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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