CN202926274U - 一种“孔口封闭灌浆法”专用水压式孔口封闭器 - Google Patents
一种“孔口封闭灌浆法”专用水压式孔口封闭器 Download PDFInfo
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103032043A (zh) * | 2012-11-22 | 2013-04-10 | 中国水电顾问集团中南勘测设计研究院 | 一种孔口封闭灌浆法专用水压式孔口封闭器 |
CN109208580A (zh) * | 2018-10-26 | 2019-01-15 | 中国电建集团中南勘测设计研究院有限公司 | 一种孔口封闭器及钻灌装置 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103032043A (zh) * | 2012-11-22 | 2013-04-10 | 中国水电顾问集团中南勘测设计研究院 | 一种孔口封闭灌浆法专用水压式孔口封闭器 |
CN109208580A (zh) * | 2018-10-26 | 2019-01-15 | 中国电建集团中南勘测设计研究院有限公司 | 一种孔口封闭器及钻灌装置 |
CN109208580B (zh) * | 2018-10-26 | 2023-11-07 | 中国电建集团中南勘测设计研究院有限公司 | 一种孔口封闭器及钻灌装置 |
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C14 | Grant of patent or utility model | ||
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C56 | Change in the name or address of the patentee |
Owner name: HYDROCHINA ZHONGNAN ENGINEERING CORPORATION Free format text: FORMER NAME: ZHONGNAN PROSPECTING DESIGN INST. CHINA HYDRAUELECTRIC CONSULTANT GROUP Owner name: CHINA POWER GROUP ZHONGNAN INVESTIGATION DESIGN + Free format text: FORMER NAME: HYDROCHINA ZHONGNAN ENGINEERING CORPORATION |
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CP01 | Change in the name or title of a patent holder |
Address after: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Patentee after: HYDROCHINA ZHONGNAN ENGINEERING Corp. Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Patentee before: Mid-South Hydroelectric Investigation & Design Institute of China Hydropower Engineering Consulting Group |
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CP03 | Change of name, title or address |
Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Patentee after: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd. Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Patentee before: HYDROCHINA ZHONGNAN ENGINEERING Corp. |
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CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20130508 |