4. Measuring and testing
  5. Borehole or drilling

Paul A. Bergren

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Acoustic fluid analysis method

Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate

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Apparatus and method for determining the gravitational orientati

Measuring and testing – Borehole or drilling
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Downhole sorption cooling and heating in wireline logging...

Refrigeration – Structural installation – With electrical component cooling
Reexamination Certificate

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System and method for dual path length optical analysis of...

Optics: measuring and testing – Inspection of flaws or impurities – Bore inspection
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1775847

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