LandOfFree - US Patents - Listing for Wells,Pistons, fluid driven into well,With stop

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Anti-rotation apparatus for limiting rotation of cementing...

Wells – Pistons – fluid driven into well – With stop

Reexamination Certificate

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Anti-rotational cementing apparatus

Wells – Pistons – fluid driven into well – With stop

Patent

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Apparatus for the remote deployment of valves

Wells – Pistons – fluid driven into well – With stop

Patent

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Cementing plug

Wells – Pistons – fluid driven into well – With stop

Patent

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Composite landing collar for cementing operation

Wells – Pistons – fluid driven into well – With stop

Reexamination Certificate

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Coupling for releasing tubing strings from downhole tools

Wells – Pistons – fluid driven into well – With stop

Patent

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Pump out sub

Wells – Pistons – fluid driven into well – With stop

Patent

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Pump-down sand washing tool

Wells – Pistons – fluid driven into well – With stop

Patent

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Releasable well tool stopping devices and systems

Wells – Pistons – fluid driven into well – With stop

Patent

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Seal assembly for fluid injection pump-down tools

Wells – Pistons – fluid driven into well – With stop

Patent

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Self-aligning well apparatuses and anti-rotation device for well

Wells – Pistons – fluid driven into well – With stop

Patent

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Subsurface well apparatus having flexing means and method of usi

Wells – Pistons – fluid driven into well – With stop

Patent

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Unitary float valve and wiping plug retainer

Wells – Pistons – fluid driven into well – With stop

Patent

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Well apparatuses and anti-rotation device for well apparatuses

Wells – Pistons – fluid driven into well – With stop

Patent

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Well apparatuses and anti-rotation device for well apparatuses

Wells – Pistons – fluid driven into well – With stop

Patent

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Wire-line retrievable, mechanically operated spot valve

Wells – Pistons – fluid driven into well – With stop

Patent

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