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

William David Murray

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Combination drill motor with measurement-while-drilling electron

Measuring and testing – Borehole or drilling – During drilling
Patent

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Downhole tool bearing assembly

Bearings – Rotary bearing – Antifriction bearing
Patent

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Well logging apparatus having a separate mounting member on whic

Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Patent

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Profile ID: LFUS-PAI-P-177287

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