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

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Adjustable safety valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Annular flow control safety valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Annulus operated test valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Annulus pressure controlled reversing valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Annulus pressure controlled test valve with locking annulus pres

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Annulus safety apparatus

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Anti blow-out control apparatus

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Apparatus for controlling a downhole device

Wells – Valves – closures or changeable restrictors – Fluid operated

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Apparatus for controlling well cementing operation

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Apparatus for retaining axial mandrel movement relative to a cyl

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Apparatus for washover featuring controllable circulating valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Apparatus having a releasable lock

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Auto-fill sub

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Automatic blanking completion tool

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Automatic fill-up floating apparatus

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Back pressure flapper valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Balance line hydraulically operated well safety valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Balanced area safety valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Ball valve actuating mechanism

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Ball valve actuating mechanism

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

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