CN204419115U - 一种高压突水钻孔的封孔装置 - Google Patents
一种高压突水钻孔的封孔装置 Download PDFInfo
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- CN204419115U CN204419115U CN201420853647.4U CN201420853647U CN204419115U CN 204419115 U CN204419115 U CN 204419115U CN 201420853647 U CN201420853647 U CN 201420853647U CN 204419115 U CN204419115 U CN 204419115U
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CN201420853647.4U CN204419115U (zh) | 2014-12-29 | 2014-12-29 | 一种高压突水钻孔的封孔装置 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104790904A (zh) * | 2014-12-29 | 2015-07-22 | 神华集团有限责任公司 | 一种高压突水钻孔的封孔装置及封孔方法 |
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 |
CN104790904B (zh) * | 2014-12-29 | 2018-02-09 | 神华集团有限责任公司 | 一种高压突水钻孔的封孔装置及封孔方法 |
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2014
- 2014-12-29 CN CN201420853647.4U patent/CN204419115U/zh not_active Withdrawn - After Issue
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104790904A (zh) * | 2014-12-29 | 2015-07-22 | 神华集团有限责任公司 | 一种高压突水钻孔的封孔装置及封孔方法 |
CN104790904B (zh) * | 2014-12-29 | 2018-02-09 | 神华集团有限责任公司 | 一种高压突水钻孔的封孔装置及封孔方法 |
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 |
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Address after: 100011 Beijing, Dongcheng District Anwai Binhe West Road No. 22 Shenhua building Co-patentee after: Hanggin limited energy liability company of Shenhua Patentee after: Shenhua Group LLC Co-patentee after: Xi'an Research Institute, CCTEG Address before: 100011 Beijing, Dongcheng District Anwai Binhe West Road No. 22 Shenhua building Co-patentee before: Hanggin limited energy liability company of Shenhua Patentee before: Shenhua Group LLC Co-patentee before: China Coal Technology & Engineering Group Xi'an Research Institute |
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AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20180209 |
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AV01 | Patent right actively abandoned |