LandOfFree - US Patents - Listing for Boring or penetrating the earth,Below-ground impact members

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Valve used in a hydraulic drilling jar

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Variable hydraulic resistor jarring tool

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Variable orifice sleeve valve hydraulic jar tool

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Venting and sealing system for down-hole drills

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Vertically adjustable pipe racking apparatus

Boring or penetrating the earth – Below-ground impact members – With releasable means to detachably retain telescoping...

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Vibration isolator

Boring or penetrating the earth – Below-ground impact members – With releasable means to detachably retain telescoping...

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Well case driving anvil

Boring or penetrating the earth – Below-ground impact members

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Well jar

Boring or penetrating the earth – Below-ground impact members – With releasable means to detachably retain telescoping...

Patent

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Well jar

Boring or penetrating the earth – Below-ground impact members – With releasable means to detachably retain telescoping...

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Well jar accelerator with expansion chamber

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Well jar having a time delay section

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Well jar incorporating elongate resilient vibration snubbers and

Boring or penetrating the earth – Below-ground impact members – Resiliently biased

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Well tool and method of use therefor

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Working tool for a percussion power tool

Boring or penetrating the earth – Below-ground impact members – Telescoping members relatively rotatable

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

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