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

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Sub-surface release plug assembly with primary and secondary rel

Wells – Pistons – fluid driven into well

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Subsurface well apparatus having flexing means and method of usi

Wells – Pistons – fluid driven into well – With stop

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Surface controlled subsurface safety valve

Wells – Pistons – fluid driven into well – With downflow past piston

Patent

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Surface deployed cement separation plug

Wells – Pistons – fluid driven into well

Reexamination Certificate

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Swabbing cup construction for swabbing an oil well pipe

Wells – Pistons – fluid driven into well

Patent

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System for controlling the flow of fluid in an oil well

Wells – Pistons – fluid driven into well – With downflow past piston

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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Wellbore cementing system

Wells – Pistons – fluid driven into well

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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Wireline delivery tool

Wells – Pistons – fluid driven into well – With downflow past piston

Patent

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