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

Paul S. Putnam

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Device for handling and racking riser pipes and drill pipes

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

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Mechanized stand handling apparatus for drilling rigs

Material or article handling – Well pipe or rod racking mechanism – With slope change
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Profile ID: LFUS-PAI-P-1679437

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