| 发明名称 |
Improved mechanically expanding climbing aid. |
| 摘要 |
<p>A climbing aid provided with opposing cam members and parallel axles on which said cam members pivot with crossed radii.</p> |
| 申请公布号 |
EP0223964(A2) |
申请公布日期 |
1987.06.03 |
| 申请号 |
EP19860113202 |
申请日期 |
1986.09.25 |
| 申请人 |
CHRISTIANSON, TONY |
发明人 |
CHRISTIANSON, TONY |
| 分类号 |
A63B29/02;(IPC1-7):A63B29/02 |
主分类号 |
A63B29/02 |
| 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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