CN201372794Y - 尾矿坝渗流勘测钻孔维护装置 - Google Patents
尾矿坝渗流勘测钻孔维护装置 Download PDFInfo
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- CN201372794Y CN201372794Y CN200920102057U CN200920102057U CN201372794Y CN 201372794 Y CN201372794 Y CN 201372794Y CN 200920102057 U CN200920102057 U CN 200920102057U CN 200920102057 U CN200920102057 U CN 200920102057U CN 201372794 Y CN201372794 Y CN 201372794Y
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CN200920102057U CN201372794Y (zh) | 2009-03-23 | 2009-03-23 | 尾矿坝渗流勘测钻孔维护装置 |
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CN200920102057U CN201372794Y (zh) | 2009-03-23 | 2009-03-23 | 尾矿坝渗流勘测钻孔维护装置 |
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CN201372794Y true CN201372794Y (zh) | 2009-12-30 |
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CN200920102057U Expired - Fee Related CN201372794Y (zh) | 2009-03-23 | 2009-03-23 | 尾矿坝渗流勘测钻孔维护装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101749005A (zh) * | 2010-03-17 | 2010-06-23 | 新奥气化采煤有限公司 | 地下钻孔保护工艺 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101749005A (zh) * | 2010-03-17 | 2010-06-23 | 新奥气化采煤有限公司 | 地下钻孔保护工艺 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: SINOCHEM SECOND CONSTRUCTION GROUP CO., LTD. |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20100409 Address after: 030021 No. four, Lane 21, Yi Jing Street, Taiyuan, Shanxi Patentee after: Shanxi Huajin Geotechnical Engineering Prospecting Co., Ltd. Patentee after: China Chemical Engineering Second Construction Corporation Address before: 030021 No. four, Lane 21, Yi Jing Street, Taiyuan, Shanxi Patentee before: Shanxi Huajin Geotechnical Engineering Prospecting Co., Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20180323 |
|
CF01 | Termination of patent right due to non-payment of annual fee |