4. Wells
  5. With electrical means
  6. Valve

John Foreman Stewart

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Downhole device for controlling fluid flow in a well

Wells – With electrical means – Valve
Reexamination Certificate

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Gel release device

Wells – With electrical means – Indicating
Reexamination Certificate

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Generating electric power in a wellbore

Batteries: thermoelectric and photoelectric – Thermoelectric – Electric power generator
Reexamination Certificate

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Hybrid well communication system

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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Method and system for moving equipment into and through an...

Wells – With electrical means
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2148658

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