- 专利标题: AUTOMATIC CHOKING HYDRAULIC SHOCK REDUCTION VALVE
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申请号: EP22868227.4申请日: 2022-09-01
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公开(公告)号: EP4399389A1公开(公告)日: 2024-07-17
- 发明人: MCAULEY, Alexander , NGUYEN, Thuc Ngoc , LEON, Claudia , WOODRUFF-HALL, Alexander
- 申请人: Baker Hughes Oilfield Operations, LLC
- 申请人地址: US Houston, Texas 77073 17021 Aldine Westfield Road
- 专利权人: Baker Hughes Oilfield Operations, LLC
- 当前专利权人: Baker Hughes Oilfield Operations, LLC
- 当前专利权人地址: US Houston, Texas 77073 17021 Aldine Westfield Road
- 代理机构: Osha BWB
- 优先权: US 2117468077 2021.09.07
- 国际申请: US2022075824 2022.09.01
- 国际公布: WO2023039348 2023.03.16
- 主分类号: E21B34/02
- IPC分类号: E21B34/02 ; E21B33/06
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