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US3364993A
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Method of well casing repair
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US3326293A
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Well casing repair
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US3093152A
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Valve
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US3077329A
|
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Valve
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US2914037A
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Hydraulic pumping system
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US2914036A
|
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Hydraulic pumping system
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US2684639A
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Well pump
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US2684638A
|
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Pump
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US2646062A
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Automatic well flow valve
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US2527954A
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Well spider
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US2421659A
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Seal for pipe joints
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US2504720A
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Fluid pressure regulator
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US2245010A
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System and apparatus for flowing wells
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US2245009A
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Flow valve
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US2245008A
|
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Well fluid flow controlling device
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US2245007A
|
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Stuffing box
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US2245006A
|
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System and apparatus for flowing wells
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US2302391A
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System and apparatus for lifting fluid from wells
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US2245005A
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Means for controlling the flow of fluids under pressure
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US2245004A
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Well fluid controlling device
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