4. Boring or penetrating the earth
  5. With signaling, indicating, testing or measuring
  6. Indicating, testing or measuring a condition of the formation

Kelly D. Stephens

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Mud by-pass regulator apparatus for measurement while drilling s

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Patent

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Swivel release rope spool

Winding – tensioning – or guiding – Reeling device – With particular frame or frame carrier
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Profile ID: LFUS-PAI-P-709065

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