| 发明名称 |
Use of gravitation effect of sag of fixed in two points non-stretched chain for determination of pass of seismic ray at worked out and not worked out space at industrial blasts in pits |
| 摘要 |
Use of gravitation effect of sag of fixed in two points non-stretched chain for determination of pass of seismic ray at worked out and not worked out space at industrial blasts in pits. |
| 申请公布号 |
UA37590(U) |
申请公布日期 |
2008.12.10 |
| 申请号 |
UA20080000452U |
申请日期 |
2008.01.14 |
| 申请人 |
"RESEARCH MINING INSTITUTE", STATE ENTERPRISE |
发明人 |
MANTULA YURII MAKAROVYCH |
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