LandOfFree - US Patents - Listing for Wells,Valves, closures or changeable restrictors

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Improved valve assembly apparatus using travelling isolation pip

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Incremental annular choke

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Independently powered breakout apparatus and method for a sectio

Wells – Valves – closures or changeable restrictors

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Inflow regulation device for a production pipe for production of

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Injection control device for subterranean well conduit

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Injection control device for subterranean well conduit

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Injection valve for injecting chemicals and similar liquid subst

Wells – Valves – closures or changeable restrictors – Operated by dropped element

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Insertion type cementing baffle

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Inside blowout preventer well tool

Wells – Valves – closures or changeable restrictors – Operated by dropped element

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Instrumentation for a downhole deployment valve

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Internal fluid control valve for use in oil well remedial operat

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Inverse differential casing cementing float valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Isolation valve for subsurface safety valve line

Wells – Valves – closures or changeable restrictors – Fluid operated

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Isolation valve with frangible flapper element

Wells – Valves – closures or changeable restrictors – Destructible element

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

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