4. Brushing, scrubbing, and general cleaning
  5. Implements

Richard Alvin Armell

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2-Stage underreamer

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
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Downhole tool

Wells – Valves – closures or changeable restrictors – Fluid operated
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Tool for cleaning or conditioning tubular structures such as wel

Brushing – scrubbing – and general cleaning – Implements
Patent

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Profile ID: LFUS-PAI-P-503443

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