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Mechanical constant-resistance single prop continuous prop lifting pre-tightening device and method

  • Release time:2023-09-01
  • Hits:
  • School Sign: 

    第一单位
  • Disigner of the Invention: 

    puhai,jufeng,zhangkai,wuyu,JiangFeng LIU,吴鹏,樊进城,冯志威
  • Type of Patent: 

    国内
  • State of Patent: 

    专利授权
  • Application Number: 

    10,,844,717
  • Number of Inventors: 

    1
  • Service Invention or Not: 

    no
  • Application Date: 

    2019-03-12
  • Authorization Date: 

    2020-09-30
  • First Author: 

    chenyanlong