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一种煤矿乏风瓦斯安全取气系统

  • Release time:2020-10-30
  • Hits:

  • Affilication of Author(s): 

    安全工程学院

  • Disigner of the Invention: 

    linboquan,郑苑楠

  • Type of Patent: 

    国际

  • State of Patent: 

    专利授权

  • Application Number: 

    201821597891.3

  • Number of Inventors: 

    3

  • Service Invention or Not: 

    no

  • Application Date: 

    2018-09-29

  • Authorization Date: 

    2019-07-05

  • First Author: 

    LI Qingzhao
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