Release Time:2018-07-04 |
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李树忱
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Gender:Male
Patents
用于膨胀性土层隧道初期的钢格栅钢拱架联合支护
Type of Patent:实用新型
Application Number:201420068134.2
Number of Inventors:6
Service Invention or Not:No
Application Date:2014-02-17
Publication Date:2014-09-10
Authorization Date:2014-02-17