CN214424470U - 一种带防砂结构的测试用井下开关阀 - Google Patents
一种带防砂结构的测试用井下开关阀 Download PDFInfo
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CN112554841A (zh) * | 2020-12-18 | 2021-03-26 | 洛阳润成石化设备有限公司 | 一种带防砂结构的测试用井下开关阀 |
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CN112554841A (zh) * | 2020-12-18 | 2021-03-26 | 洛阳润成石化设备有限公司 | 一种带防砂结构的测试用井下开关阀 |
CN112554841B (zh) * | 2020-12-18 | 2023-01-03 | 洛阳润成石化设备有限公司 | 一种带防砂结构的测试用井下开关阀 |
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Inventor after: Yuan Shaofeng Inventor after: Shang Qianfeng Inventor after: Jing Guanjun Inventor after: Cao Xiong Inventor after: He Zhen Inventor after: Zhu Bin Inventor before: Yuan Shaofeng Inventor before: Shang Qianfeng Inventor before: Jin Guanjun Inventor before: Cao Xiong Inventor before: He Zhen Inventor before: Zhu Bin |
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