| 发明名称 |
Process and device for drilling water-drainage holes in hollow slab |
| 摘要 |
A process and a device for drilling water-drainage holes in the lower surface of a hollow concrete slab 4. One or more drills 14 has/have been combined in the lifting and transport members for the slab. <IMAGE>
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| 申请公布号 |
FI82631(B) |
申请公布日期 |
1990.12.31 |
| 申请号 |
FI19890003515 |
申请日期 |
1989.07.21 |
| 申请人 |
OY PARTEK AB |
发明人 |
DANILOTSCHKIN, NIKOLAI |
| 分类号 |
B28B;B28B1/48;B28B11/12;B28D1/14;(IPC1-7):B28B11/12 |
主分类号 |
B28B |
| 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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