Patents
半刚性异型梁锚索桁架巷道支护系统
Release Time:2018-05-15
  • Type of Patent:
    实用新型
  • Application Number:
    201120124970.4
  • Number of Inventors:
    4
  • Service Invention or Not:
    No
  • Application Date:
    2011-04-26
  • Publication Date:
    2011-12-07
  • Authorization Date:
    2011-04-26
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