CN202530494U - 一种环桩喷冲成坑装置 - Google Patents
一种环桩喷冲成坑装置 Download PDFInfo
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- CN202530494U CN202530494U CN2012200403526U CN201220040352U CN202530494U CN 202530494 U CN202530494 U CN 202530494U CN 2012200403526 U CN2012200403526 U CN 2012200403526U CN 201220040352 U CN201220040352 U CN 201220040352U CN 202530494 U CN202530494 U CN 202530494U
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CN2012200403526U CN202530494U (zh) | 2012-02-08 | 2012-02-08 | 一种环桩喷冲成坑装置 |
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CN2012200403526U CN202530494U (zh) | 2012-02-08 | 2012-02-08 | 一种环桩喷冲成坑装置 |
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CN202530494U true CN202530494U (zh) | 2012-11-14 |
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CN2012200403526U Expired - Fee Related CN202530494U (zh) | 2012-02-08 | 2012-02-08 | 一种环桩喷冲成坑装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103243754A (zh) * | 2012-02-08 | 2013-08-14 | 中国石油化工股份有限公司 | 一种环桩喷冲成坑装置及其使用方法 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103243754A (zh) * | 2012-02-08 | 2013-08-14 | 中国石油化工股份有限公司 | 一种环桩喷冲成坑装置及其使用方法 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20151103 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: Sinopec Corp. Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: Sinopec Corp. Patentee before: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20210208 |
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CF01 | Termination of patent right due to non-payment of annual fee |