CN210483592U - 一种空气钻井用远程加压式喷雾装置 - Google Patents
一种空气钻井用远程加压式喷雾装置 Download PDFInfo
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- CN210483592U CN210483592U CN201921200684.4U CN201921200684U CN210483592U CN 210483592 U CN210483592 U CN 210483592U CN 201921200684 U CN201921200684 U CN 201921200684U CN 210483592 U CN210483592 U CN 210483592U
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Effective date of registration: 20210104 Address after: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. 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 |
Granted publication date: 20200508 |
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CF01 | Termination of patent right due to non-payment of annual fee |