4. Measuring and testing
  5. Borehole or drilling
  6. Fluid flow measuring or fluid analysis

Wade D. DuPree

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Borehole caliper tool

Geometrical instruments – Gauge – Internal
Reexamination Certificate

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Borehole caliper tool using ultrasonic transducer

Measuring and testing – Borehole or drilling – Fluid flow measuring or fluid analysis
Reexamination Certificate

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Chain drive system

Boring or penetrating the earth – With below-ground tool drive prime mover – With mechanical motion-converting means
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2911529

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