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

Leon M. Earl

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Mud pulse pressure signal generator

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
Patent

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Switch actuator and flow restrictor pilot valve assembly for mea

Boring or penetrating the earth – With signaling – indicating – testing or measuring
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Profile ID: LFUS-PAI-P-1735719

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