CN206707669U - 固井施工泥浆不落地替浆系统 - Google Patents
固井施工泥浆不落地替浆系统 Download PDFInfo
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- CN206707669U CN206707669U CN201720440310.4U CN201720440310U CN206707669U CN 206707669 U CN206707669 U CN 206707669U CN 201720440310 U CN201720440310 U CN 201720440310U CN 206707669 U CN206707669 U CN 206707669U
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CN201720440310.4U CN206707669U (zh) | 2017-04-25 | 2017-04-25 | 固井施工泥浆不落地替浆系统 |
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CN201720440310.4U CN206707669U (zh) | 2017-04-25 | 2017-04-25 | 固井施工泥浆不落地替浆系统 |
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TR01 | Transfer of patent right |
Effective date of registration: 20211105 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 Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. 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: 20171205 |