中国矿业大学主页平台系统 Qingquan Liu--Home-- A device and method for measuring the hole diameter of hydraulic punching hole in the underground coal seam

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,Qingquan Liu
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

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