刘清泉

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A device and method for measuring the hole diameter of hydraulic punching hole in the underground coal seam
Release time:2024-09-01  Hits:

Affilication of Author(s):中国矿业大学
Scope of patent:国内
School Sign:第一单位
Disigner of the Invention:haocongmeng,chengyuanping,Even,zhangrong,liuqingquan
Type of Patent:Utility models
Application Number:CN 201810985894.2
Authorization number:ZL201810985894.2
Number of Inventors:6
Service Invention or Not:no
Application Date:2018-08-28
Authorization Date:2018-08-28
First Author:Kenneth Zhang