CN207934861U - 一种手动控制直推式三通切换装置 - Google Patents
一种手动控制直推式三通切换装置 Download PDFInfo
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- CN207934861U CN207934861U CN201721787316.5U CN201721787316U CN207934861U CN 207934861 U CN207934861 U CN 207934861U CN 201721787316 U CN201721787316 U CN 201721787316U CN 207934861 U CN207934861 U CN 207934861U
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CN201721787316.5U CN207934861U (zh) | 2017-12-20 | 2017-12-20 | 一种手动控制直推式三通切换装置 |
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CN201721787316.5U CN207934861U (zh) | 2017-12-20 | 2017-12-20 | 一种手动控制直推式三通切换装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108150133A (zh) * | 2017-12-20 | 2018-06-12 | 中国石油集团渤海钻探工程有限公司 | 一种大排量连续供液不同流体间快速切换装置 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108150133A (zh) * | 2017-12-20 | 2018-06-12 | 中国石油集团渤海钻探工程有限公司 | 一种大排量连续供液不同流体间快速切换装置 |
CN108150133B (zh) * | 2017-12-20 | 2023-08-18 | 中国石油天然气集团有限公司 | 一种大排量连续供液不同流体间快速切换装置 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
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TR01 | Transfer of patent right |
Effective date of registration: 20210223 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. Patentee after: CNPC Huabei Oilfield Branch Address before: China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd., No. 83, Second Street, economic and Technological Development Zone, Binhai New Area, Tianjin, 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. Patentee before: PetroChina Company Limited |
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TR01 | Transfer of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 Termination date: 20211220 |
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CF01 | Termination of patent right due to non-payment of annual fee |