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A invention relates to a device and method for measuring the shape of the hydraulic flushing hole in a coal seam
- Release time:2024-09-01
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Affilication of Author(s):
安全工程学院Scope of patent:
国内School Sign:
第一单位Disigner of the Invention:
卢彦飞,褚鹏,chengyuanping,郝从猛,王德洋Type of Patent:
InventState of Patent:
Authorized patentsApplication Number:
CN 201910312174.4Authorization number:
ZL 201910312174.4Number of Inventors:
6Service Invention or Not:
noApplication Date:
2019-04-18Authorization Date:
2020-04-10First Author:
Qingquan Liu