4. Communications, electrical: acoustic wave systems and devices
  5. Wellbore telemetering
  6. Through well fluids

Terrence G. Frith

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Filter assembly having a bypass passageway and method

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

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Servo-driven mud pulser

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
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Profile ID: LFUS-PAI-P-796722

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