Zhang Jianhua
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一种深井救援装置及方法
2021-09-19 Hits:
Affilication of Author(s):机械工程学院
Type of Patent:发明
Application Number:202010092460.7
Number of Inventors:1
Service Invention or Not:no
Application Date:2020-02-14
Publication Date:2021-08-31
Authorization Date:2021-08-31
Publication Date:2021-08-31
Application Date:2020-02-14
Authorization Date:2021-08-31
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