| 发明名称 |
APPARAT FOR DEMONSTRATION AV KASTRORELSE |
| 摘要 |
The teaching aid to demonstrate resultant motion comprises three balls which are caused to move in such a way that the respective velocities of two of the balls are the composite constituents of the velocity of the third. |
| 申请公布号 |
SE7812895(L) |
申请公布日期 |
1980.06.16 |
| 申请号 |
SE19780012895 |
申请日期 |
1978.12.15 |
| 申请人 |
PERVAN ROBIN |
发明人 |
PERVAN ROBIN |
| 分类号 |
G09B23/00;(IPC1-7):G09B23/00 |
主分类号 |
G09B23/00 |
| 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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