CN206707649U - 修井机近远程混合电液控系统 - Google Patents
修井机近远程混合电液控系统 Download PDFInfo
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- CN206707649U CN206707649U CN201720562714.0U CN201720562714U CN206707649U CN 206707649 U CN206707649 U CN 206707649U CN 201720562714 U CN201720562714 U CN 201720562714U CN 206707649 U CN206707649 U CN 206707649U
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Effective date of registration: 20200929 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. Address before: 300280 Tianjin Dagang oil field, Grand Port, Tianjin Patentee before: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. |
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Effective date of registration: 20220713 Address after: 100120 Xicheng District six paw Kang in Beijing City Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. Patentee after: Tianjin Bohai Jerry Petroleum Equipment Co.,Ltd. Address before: 100120 Xicheng District six paw Kang in Beijing City Patentee before: CHINA NATIONAL PETROLEUM Corp. Patentee before: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. |