4. Pumps
  5. One fluid pumped by contact or entrainment with another
  6. Liquid piston

Harold Gregg

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Bit balling treatment

Boring or penetrating the earth – Processes – Chemical reaction with earth formation or drilling fluid...
Reexamination Certificate

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Bit balling treatment

Boring or penetrating the earth – Processes – Chemical reaction with earth formation or drilling fluid...
Reexamination Certificate

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Shoreline air compressors wherein swell water pumps the air

Pumps – One fluid pumped by contact or entrainment with another – Liquid piston
Patent

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Profile ID: LFUS-PAI-P-1778581

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