4. Boring or penetrating the earth
  5. With tool drive prime mover or above-ground mechanical...

Clyde A. Willis

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Apparatus for gripping a down hole tubular for rotation

Boring or penetrating the earth – With above-ground means to feed tool
Patent

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Apparatus for gripping a down hole tubular for support and rotat

Handling: hand and hoist-line implements – Grapple – Socket and slip wedge
Patent

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Apparatus for supporting and rotating a down hole tubular

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure
Patent

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Automatic pipe elevator

Handling: hand and hoist-line implements – Grapple – Pivoted jaws
Patent

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Automatic sequencing system for earth drilling machine

Material or article handling – Well pipe or rod racking mechanism – With slope change
Patent

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Profile ID: LFUS-PAI-P-443711

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