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2019
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Invention
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Device for prevention of turbine rotation. The invention relates to pumping equipment and can be ... |
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2018
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Invention
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Downhole pump drive including reverse reduction gear with switching mechanism. A downhole pump dr... |
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Invention
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Borehole pump. The invention relates to the field of pumping equipment and can be used in the oil... |
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Invention
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Drive of a downhole pump. The invention relates to oil production equipment and can be used for a... |
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Invention
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Downhole pump. The invention relates to the field of pumping equipment and can be used in the oil... |
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Invention
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Check valve. The invention relates to petroleum engineering, and more particularly to the design ... |
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Invention
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Check valve. The invention relates to petroleum engineering, and more particularly to designs for... |
