| 发明名称 |
Blasting tube for cool seams |
| 摘要 |
The tube consists of a double-walled tube closed at one end and with the annular space filled with water or other extinguishing material. The inside of the tube contains a confined explosive charge.
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| 申请公布号 |
ES2046916(A1) |
申请公布日期 |
1994.02.01 |
| 申请号 |
ES19910000912 |
申请日期 |
1991.04.10 |
| 申请人 |
INVEST TECNOLOGICA DE EQUIPOS |
发明人 |
MARTINEZ DIAZ CARLOS |
| 分类号 |
E21F5/00;F42D5/00;G21C7/08;(IPC1-7):E21F5/00 |
主分类号 |
E21F5/00 |
| 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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