4. Measuring and testing
  5. Borehole or drilling
  6. During drilling

Marcel Boucher

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Accelerometer caliper while drilling

Measuring and testing – Borehole or drilling – During drilling
Reexamination Certificate

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Apparatus for weight on bit measurements, and methods of...

Measuring and testing – Borehole or drilling – During drilling
Reexamination Certificate

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Downhole acoustic source

Boring or penetrating the earth – With signaling – indicating – testing or measuring
Reexamination Certificate

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On-bit, analog multiplexer for transmission of multi-channel...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2545571

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