4. Wells
  5. With electrical means
  6. Electrical motor

Wayne A. Grosch

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Pump for a reverse circulation rotary drilling rig

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – With suction pump inlet communicating with bore bottom
Patent

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Submersible pump adapter

Wells – With electrical means – Electrical motor
Patent

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Swivel with removable packing gland

Pipe joints or couplings – Swivel – Pipe in socket type
Patent

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Water pump

Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1003279

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