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大倾角工作面上端头三角区液压支架护顶装置

  • Release time:2020-10-30
  • Hits:
  • Affilication of Author(s): 

    矿业工程学院
  • Disigner of the Invention: 

    李晋平,李志杰,王彦林,赵克俭,岳太刚,张进忠,高继龙,于全想
  • Note: 

    矿业学院 13645201296
  • Type of Patent: 

    国内
  • State of Patent: 

    专利授权
  • Application Number: 

    201210558775.1
  • Number of Inventors: 

    9
  • Service Invention or Not: 

    no
  • Application Date: 

    2012-12-21
  • Authorization Date: 

    2014-12-17
  • First Author: 

    Ma Liqiang