Downhole drilling anti-dust device
ZHANG HONGQIANG, ZHANG QIAOXIN, WANG JIANWEI, SONG TIANZHAO, LI HUAISEN, MAO LIANHE
Year of Publication 03.02.2016
Get full text
Year of Publication 03.02.2016
Patent
Underground boring dustproof method
WANG JIANWEI, ZHANG QIAOXIN, LIU ZHANG, SONG TIANZHAO, LI HUAISEN, JIA JIANCAI
Year of Publication 09.12.2015
Get full text
Year of Publication 09.12.2015
Patent
Spit-out prevention device
ZHANG HONGQIANG, WANG WANLI, WANG JIANWEI, LI HUAISEN, SONG TIANZHAO, SONG TIANQIANG, JIA JIANCAI
Year of Publication 17.06.2015
Get full text
Year of Publication 17.06.2015
Patent
Structure for taking out hole packer
ZHANG HONGQIANG, WANG WANLI, WANG JIANWEI, MAO DENGKUN, LI HUAISEN, SONG TIANZHAO
Year of Publication 10.06.2015
Get full text
Year of Publication 10.06.2015
Patent
Underworkings cable pendant
WANG YA'NAN, LI SHUIPING, ZHANG HONGQIANG, ZHANG QIAOXIN, WANG JIANWEI, YAN HONGYU, LI JIANSHOU, WANG SHAOFEI, LI HUAISEN, SONG TIANZHAO, MAO LIANHE
Year of Publication 17.02.2016
Get full text
Year of Publication 17.02.2016
Patent
Drill stem taking-out tool
LIU YANTUAN, LIU ZHANWEI, MIAO ZHENG, LI SHUIPING, WANG WANLI, WANG JIANWEI, LI HUAISEN, SONG TIANZHAO, JIA JIANCAI
Year of Publication 10.06.2015
Get full text
Year of Publication 10.06.2015
Patent
Method for taking out hole sealing device
WANG JIANWEI, ZHENG GUOCHEN, MAO DENGKUN, LI HUAISEN, SONG TIANZHAO, JIA JIANCAI
Year of Publication 22.06.2016
Get full text
Year of Publication 22.06.2016
Patent
Forestope fixing device in pit
WANG YA'NAN, ZHANG HONGQIANG, ZHANG QIAOXIN, WANG JIANWEI, ZHENG GUOCHEN, YAN HONGYU, WANG SHAOFEI, LI HUAISEN, SONG TIANZHAO, SONG TIANQIANG, MAO LIANHE
Year of Publication 02.03.2016
Get full text
Year of Publication 02.03.2016
Patent
Portable hole sealing device
LIU ZHANWEI, WANG JIANWEI, ZHENG GUOCHEN, MAO DENGKUN, LI HUAISEN, SONG TIANZHAO, JIA JIANCAI
Year of Publication 24.07.2013
Get full text
Year of Publication 24.07.2013
Patent
Metal framework drainage apparatus suitable for high mash gas coal seam
LIU YANTUAN, WANG JIANWEI, SUN ZHANFENG, ZHENG GUOCHEN, MAO DENGKUN, JING DEYING, LI ERSONG, LI HUAISEN, DONG ZHANYING, JIA JIANCAI
Year of Publication 23.02.2011
Get full text
Year of Publication 23.02.2011
Patent