CN203130028U - 两堵封孔器 - Google Patents
两堵封孔器 Download PDFInfo
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- CN203130028U CN203130028U CN 201320147584 CN201320147584U CN203130028U CN 203130028 U CN203130028 U CN 203130028U CN 201320147584 CN201320147584 CN 201320147584 CN 201320147584 U CN201320147584 U CN 201320147584U CN 203130028 U CN203130028 U CN 203130028U
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- bag
- swelling
- pipe
- gas
- grouting pipe
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Priority Applications (1)
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CN 201320147584 CN203130028U (zh) | 2013-03-28 | 2013-03-28 | 两堵封孔器 |
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CN 201320147584 CN203130028U (zh) | 2013-03-28 | 2013-03-28 | 两堵封孔器 |
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CN203130028U true CN203130028U (zh) | 2013-08-14 |
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CN 201320147584 Expired - Fee Related CN203130028U (zh) | 2013-03-28 | 2013-03-28 | 两堵封孔器 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103195388A (zh) * | 2013-03-28 | 2013-07-10 | 郑州煤炭工业(集团)有限责任公司 | 两堵封孔器以及封堵注浆方法 |
CN103452525A (zh) * | 2013-09-06 | 2013-12-18 | 河南理工大学 | 瓦斯抽釆固定式封堵器及其使用方法 |
CN103742104A (zh) * | 2014-01-06 | 2014-04-23 | 淮南宏昌科技有限责任公司 | 一种封孔器 |
-
2013
- 2013-03-28 CN CN 201320147584 patent/CN203130028U/zh not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103195388A (zh) * | 2013-03-28 | 2013-07-10 | 郑州煤炭工业(集团)有限责任公司 | 两堵封孔器以及封堵注浆方法 |
CN103452525A (zh) * | 2013-09-06 | 2013-12-18 | 河南理工大学 | 瓦斯抽釆固定式封堵器及其使用方法 |
CN103452525B (zh) * | 2013-09-06 | 2016-08-10 | 河南理工大学 | 瓦斯抽釆固定式封堵器及其使用方法 |
CN103742104A (zh) * | 2014-01-06 | 2014-04-23 | 淮南宏昌科技有限责任公司 | 一种封孔器 |
CN103742104B (zh) * | 2014-01-06 | 2017-01-25 | 淮南宏昌科技有限责任公司 | 一种封孔器 |
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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 | ||
CP01 | Change in the name or title of a patent holder |
Address after: 450064 No. 188 Zhongyuan West Road, Zhengzhou, Henan Patentee after: Zhengzhou Coal Industry (Group) Co., Ltd. Patentee after: ZHENGZHOU YUANJIAN SAFETY EQUIPMENT CO., LTD. Patentee after: Pingdingshan Antaihua Mining Safety Equipment Manufacturing Co., Ltd. Address before: 450064 No. 188 Zhongyuan West Road, Zhengzhou, Henan Patentee before: Zhengzhou Coal Industry (Group) Co., Ltd. Patentee before: Zhengzhou Yuanjian Coal Mine Equipment Co., Ltd. Patentee before: Pingdingshan Antaihua Mining Safety Equipment Manufacturing Co., Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20180328 |