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一种用于注浆施工的后端自封堵注浆管

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  • Affilication of Author(s):土建与水利学院

  • Type of Patent:实用新型

  • Application Number:202121583716.0

  • Number of Inventors:5

  • Service Invention or Not:no

  • Application Date:2021-07-12

  • Publication Date:2022-01-21

  • Authorization Date:2022-01-21

  • Publication Date:2022-01-21

  • Application Date:2021-07-12

  • Authorization Date:2022-01-21
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