4. Boring or penetrating the earth
  5. Processes
  6. Sampling of earth formations

James T. Aumann

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Apparatus for recovering core samples at in situ conditions

Boring or penetrating the earth – With means movable relative to tool to receive – retain – or... – Core-retaining or severing means
Reexamination Certificate

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Apparatus for recovering core samples under pressure

Boring or penetrating the earth – With means movable relative to tool below ground to stop... – In sample receiver removable through below-ground tool shaft
Reexamination Certificate

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Apparatus for recovering core samples under pressure

Boring or penetrating the earth – With means movable relative to tool to receive – retain – or... – Receiver removable through below-ground tool shaft
Reexamination Certificate

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Bearing system for a downhole motor

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

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Composite heavy metal drill collar

Boring or penetrating the earth – With tool shaft detail
Patent

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Profile ID: LFUS-PAI-P-79929

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