4. Communications: electrical
  5. Wellbore telemetering or control
  6. Including specified power transmission feature or source
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Annulus pressure operated well monitoring

Communications: electrical – Wellbore telemetering or control – Including specified power transmission feature or source
Reexamination Certificate

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Downhole power source

Communications: electrical – Wellbore telemetering or control – Including specified power transmission feature or source
Reexamination Certificate

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Downhole telemetry and control system

Communications: electrical – Wellbore telemetering or control – Including specified power transmission feature or source
Reexamination Certificate

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Method and system of communicating in a subterranean well

Communications: electrical – Wellbore telemetering or control – Including specified power transmission feature or source
Reexamination Certificate

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Multi-loop transmission system

Communications: electrical – Wellbore telemetering or control – Including specified power transmission feature or source
Reexamination Certificate

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Oil well casting electrical power pick-off points

Communications: electrical – Wellbore telemetering or control – Including specified power transmission feature or source
Reexamination Certificate

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Surface communication apparatus and method for use with...

Communications: electrical – Wellbore telemetering or control – Including specified power transmission feature or source
Reexamination Certificate

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Underground object locator

Communications: electrical – Wellbore telemetering or control – Including specified power transmission feature or source
Reexamination Certificate

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