CN202520274U - 煤矿井下探水安全防喷装置 - Google Patents
煤矿井下探水安全防喷装置 Download PDFInfo
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- CN202520274U CN202520274U CN2012200277561U CN201220027756U CN202520274U CN 202520274 U CN202520274 U CN 202520274U CN 2012200277561 U CN2012200277561 U CN 2012200277561U CN 201220027756 U CN201220027756 U CN 201220027756U CN 202520274 U CN202520274 U CN 202520274U
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CN2012200277561U CN202520274U (zh) | 2012-01-20 | 2012-01-20 | 煤矿井下探水安全防喷装置 |
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CN2012200277561U CN202520274U (zh) | 2012-01-20 | 2012-01-20 | 煤矿井下探水安全防喷装置 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103089172A (zh) * | 2013-01-18 | 2013-05-08 | 杭州祥龙钻探设备有限公司 | 一种煤矿坑道防治水专用钻探系统 |
CN107083936A (zh) * | 2017-04-25 | 2017-08-22 | 中煤科工集团重庆研究院有限公司 | 自动复位封孔器 |
CN115492548A (zh) * | 2022-11-08 | 2022-12-20 | 安徽省皖北煤电集团有限责任公司 | 一种水文地质钻孔孔口液压防喷反压卡紧装置 |
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2012
- 2012-01-20 CN CN2012200277561U patent/CN202520274U/zh not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103089172A (zh) * | 2013-01-18 | 2013-05-08 | 杭州祥龙钻探设备有限公司 | 一种煤矿坑道防治水专用钻探系统 |
CN107083936A (zh) * | 2017-04-25 | 2017-08-22 | 中煤科工集团重庆研究院有限公司 | 自动复位封孔器 |
CN115492548A (zh) * | 2022-11-08 | 2022-12-20 | 安徽省皖北煤电集团有限责任公司 | 一种水文地质钻孔孔口液压防喷反压卡紧装置 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: HANGZHOU XIANGLONG DRILLING EQUIPMENT TECHNOLOGY C Free format text: FORMER NAME: HANGZHOU XIANGLONG DRILLING EQUIPMENT CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Address after: 311504 worker Road, the Fuchun River Town, Tonglu County, Hangzhou, Zhejiang Patentee after: Hangzhou Xianglong Drilling Equipment Technology Co., Ltd. Address before: 311504 worker Road, the Fuchun River Town, Tonglu County, Hangzhou, Zhejiang Patentee before: Hangzhou Xianglong Drilling Equipment Co., Ltd. |
|
CX01 | Expiry of patent term |
Granted publication date: 20121107 |
|
CX01 | Expiry of patent term |