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Large diameter borehole apparatus

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Lightweight inflatable borehole receiver unit for seismic...

Acoustics – Geophysical or subsurface exploration – Well logging
Reexamination Certificate

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Locking arm for well tool

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Logging method and apparatus using a sonde equipped with measuri

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Logging method and apparatus using a sonde equipped with measuri

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Logging method and device in well bores utilizing directional em

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Logging tool housing with acoustic delay

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Low frequency acoustic attenuator

Acoustics – Geophysical or subsurface exploration – Well logging
Reexamination Certificate

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Low frequency flextensional acoustic source for underwater use

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Low frequency flextensional acoustic source for underwater use

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Low impedance down-hole acoustic source for well logging

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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