CN203918915U - 一种随钻仪器耐磨套取出工具 - Google Patents
一种随钻仪器耐磨套取出工具 Download PDFInfo
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- CN203918915U CN203918915U CN201420288675.6U CN201420288675U CN203918915U CN 203918915 U CN203918915 U CN 203918915U CN 201420288675 U CN201420288675 U CN 201420288675U CN 203918915 U CN203918915 U CN 203918915U
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- lock dog
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CN201420288675.6U CN203918915U (zh) | 2014-05-30 | 2014-05-30 | 一种随钻仪器耐磨套取出工具 |
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CN201420288675.6U CN203918915U (zh) | 2014-05-30 | 2014-05-30 | 一种随钻仪器耐磨套取出工具 |
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CN203918915U true CN203918915U (zh) | 2014-11-05 |
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CN201420288675.6U Expired - Fee Related CN203918915U (zh) | 2014-05-30 | 2014-05-30 | 一种随钻仪器耐磨套取出工具 |
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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: 20151124 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Patentee after: Drilling Research Institute of Zhongyuan Petroleum Engineering Co., Ltd. Sinopec Address before: 100728, No. 22 North Street, Chaoyang Gate, Beijing, Chaoyang District Patentee before: China Petrochemical Group Corp. Patentee before: Drilling Research Institute of Zhongyuan Petroleum Engineering Co., Ltd. Sinopec |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20190530 |
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CF01 | Termination of patent right due to non-payment of annual fee |