4. Boring or penetrating the earth
  5. With below-ground tool drive prime mover
  6. Fluid rotary type

Ronnie Hardie

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Downhole apparatus and method of use

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type
Reexamination Certificate

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Downhole flow pulsing apparatus

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type
Reexamination Certificate

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Percussive tool

Boring or penetrating the earth – Bit or bit element – Impact or percussion type
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2085150

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