LandOfFree - US Patents - Listing for Wells,Processes,Operating valve, closure, or changeable restrictor in a well

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Balance line safety valve with tubing pressure assist

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Balance line safety valve with tubing pressure assist

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Balanced line tubing retrievable safety valve

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Ball seat having ball support member

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Ball seat with controlled releasing pressure and method setting

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Ballistically compatible backpressure valve

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Bearing mounted ball valve and method of use

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Bi-directional ball seat system and method

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Bi-directional ball seat system and method

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Bladder-type sampling pump controller

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Blow out protector valve employing ball baffle assembly for...

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

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