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

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Telescoping torque transmission apparatus

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

Patent

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Temperature compensated 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

Temperature compensating hydraulic jarring tool

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

Patent

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Tension shock absorber device

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

Patent

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Thread joint

Boring or penetrating the earth – Below-ground impact members

Reexamination Certificate

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Transmission sleeve

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

Reexamination Certificate

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Transmission sleeve for a down hole hammer

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

Patent

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Transmission sleeve for a down hole hammer

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

Patent

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Tubular spring slip-joint and jar

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

Patent

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Two way hydraulic drilling jar

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

Patent

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