4. Boring or penetrating the earth
  5. With signaling, indicating, testing or measuring

Fred K. Fox

Inventor

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By-pass tool

Boring or penetrating the earth – With means movable relative to tool below ground to stop... – With longitudinally spaced valve seats
Patent

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Seal assembly

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Well drilling apparatus

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

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Well drilling tool

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Well drilling tool

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

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Profile ID: LFUS-PAI-P-83463

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