4. Acoustics
  5. Geophysical or subsurface exploration
  6. Well logging

Albert H. Wignall

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Downhole gravity tool

Measuring and testing – Borehole or drilling – Downhole test
Patent

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Monopole transmitter for a sonic well tool

Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
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Sonic well logging tool longitudinal wave attenuator

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Sonic well logging tool transmitter

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Sonic well tool transmitter receiver array including an attenuat

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Profile ID: LFUS-PAI-P-419326

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