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Bipolar signal amplification or generation

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

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Bipolar signal amplification or generation

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

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Bore hole transmission system using impedance modulation

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

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Bore telemetry channel of increased capacity

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

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Borehole communication and measurement system

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

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Borehole communication and measurement system

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

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Borehole logging apparatus for deep well drillings with a...

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

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Borehole telemetry system

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

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Borehole telemetry system

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

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Burst QAM downhole telemetry system

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

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Burst QAM downhole telemetry system

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

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