| 发明名称 |
DEVICE FOR COAL EXTRACTION AT THIN STEEP SEAMS |
| 摘要 |
Device for coal extraction at thin steep beds in which drive with crankshaft and con-rod is placed in ventilation drift and chains with scrapers together with load that is fixed to lower link of chains are equal to length of the face. |
| 申请公布号 |
UA48602(U) |
申请公布日期 |
2010.03.25 |
| 申请号 |
UA20090010093U |
申请日期 |
2009.10.05 |
| 申请人 |
DONBAS STATE TECHNICAL UNIVERSITY |
发明人 |
TYSCHENKO VIKTOR OLEKSIIOVYCH |
| 分类号 |
E21C25/20 |
主分类号 |
E21C25/20 |
| 代理机构 |
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代理人 |
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| 主权项 |
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