Patents
一种煤矿井下锚杆预紧安装微震传感器的装配器
Release time:2021-09-14
Hits:
- Type of Patent:
- 国家发明专利
- Application Number:
- ZL201910886421.1
- Service Invention or Not:
- no
- Application Date:
- 2019-09-19
- Authorization Date:
- 2021-03-26
- First Author:
- Li Lianchong
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