Patents
Current position: Home > Scientific Research > Patents
一种瓦斯抽采钻孔多相介质封堵装置及方法
- Release time:2020-10-30
- Hits:
Disigner of the Invention:
linboquanType of Patent:
国际State of Patent:
专利授权Application Number:
201220651274.3Number of Inventors:
2Service Invention or Not:
noApplication Date:
2012-12-03Authorization Date:
2013-05-22First Author:
LI Qingzhao
- Pre One:瓦斯抽采钻孔群区域性裂隙场二次注浆封堵装置及方法
- Next One:一种湿式孔口涡流集控尘装置