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

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Safety valve and ball type equalizing valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Safety valve for oil-wells and installation tool for the valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Safety valve hydraulically operated by telescopic drill stem mov

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Safety valve in particular for closing an oil well

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Safety valve utilizing an isolation valve and method of...

Wells – Valves – closures or changeable restrictors – Fluid operated

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Safety valve, sealing ring and seal assembly

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Safety valve, sealing ring and seal assembly

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Safety valve, sealing ring and seal assembly

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Safety valves for wells

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Self closing equalizing valve for a subsurface well safety valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Shifting tool

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Shut-in tools

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Single-phase annulus-operated sliding sleeve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Sleeve valve device and shifting tool therefor

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Sleeve-type low pressure responsive APR tester valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Snap-lock seal for seal valve assembly

Wells – Valves – closures or changeable restrictors – Fluid operated

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Spoolable flexible hydraulic controlled annular control valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Spoolable flexible hydraulic controlled coiled tubing safety val

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Spoolable flexible hydraulic controlled coiled tubing safety val

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Standing and injection valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

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