山东大学教师主页张军杰一种浆液单向流动钻注一体钻杆及施工方法 Home

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School/Department:土建与水利学院

Gender:Male

Current position: Home / Scientific Research / Patents

一种浆液单向流动钻注一体钻杆及施工方法

Release Time:2022-10-18 | Hits:

Institution:岩土与地下工程研究院

Type of Patent:Invent

Application Number:202110192598.9

Number of Inventors:4

Service Invention or Not:No

Application Date:2021-02-20

Publication Date:2022-10-11

Authorization Date:2022-10-11