4. Wells
  5. Above ground apparatus
  6. Having structure for converting from one mode of operation...

William P. Neader

Examiner

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Examiner

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Asymmetrical rotary cone bit

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent

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Drill string safety valve

Wells – Valves – closures or changeable restrictors – Fluid operated
Patent

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Hydraulically operated downhole oil well pump

Wells – With eduction pump or plunger – Having liquid-gas separator
Patent

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Oil well drilling apparatus

Wells – Above ground apparatus – Having structure for converting from one mode of operation...
Patent

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Thermally isolated well instruments

Wells – With heating – refrigerating or heat insulating means
Patent

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Profile ID: LFUS-PAI-P-174621

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