CN203961831U - 石油测井仪器双锁扣防松脱扶正卡环 - Google Patents
石油测井仪器双锁扣防松脱扶正卡环 Download PDFInfo
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- CN203961831U CN203961831U CN201420422411.5U CN201420422411U CN203961831U CN 203961831 U CN203961831 U CN 203961831U CN 201420422411 U CN201420422411 U CN 201420422411U CN 203961831 U CN203961831 U CN 203961831U
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CN201420422411.5U CN203961831U (zh) | 2014-07-28 | 2014-07-28 | 石油测井仪器双锁扣防松脱扶正卡环 |
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CN201420422411.5U CN203961831U (zh) | 2014-07-28 | 2014-07-28 | 石油测井仪器双锁扣防松脱扶正卡环 |
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CN203961831U true CN203961831U (zh) | 2014-11-26 |
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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: 20191226 Address after: 100120 Beijing Xicheng District six laying Kang Co-patentee after: CHINA PETROLEUM LOGGING Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 300457 science and Technology Development Office of Bohai Drilling Engineering Co., Ltd., No. 106 Huang Hai Road, Tianjin Binhai New Area Development Zone Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
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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: 20141126 |