CN203547686U - 一体化防砂管柱 - Google Patents
一体化防砂管柱 Download PDFInfo
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- CN203547686U CN203547686U CN201320693137.0U CN201320693137U CN203547686U CN 203547686 U CN203547686 U CN 203547686U CN 201320693137 U CN201320693137 U CN 201320693137U CN 203547686 U CN203547686 U CN 203547686U
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CN201320693137.0U CN203547686U (zh) | 2013-11-04 | 2013-11-04 | 一体化防砂管柱 |
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CN201320693137.0U CN203547686U (zh) | 2013-11-04 | 2013-11-04 | 一体化防砂管柱 |
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CN203547686U true CN203547686U (zh) | 2014-04-16 |
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CN201320693137.0U Expired - Fee Related CN203547686U (zh) | 2013-11-04 | 2013-11-04 | 一体化防砂管柱 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113464100A (zh) * | 2021-08-02 | 2021-10-01 | 山东科技大学 | 一种深海水合物开采防砂筛管堵管改善系统及应用方法 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113464100A (zh) * | 2021-08-02 | 2021-10-01 | 山东科技大学 | 一种深海水合物开采防砂筛管堵管改善系统及应用方法 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20201215 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering 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: 20140416 Termination date: 20211104 |