4. Acoustics
  5. Geophysical or subsurface exploration
  6. Seismic wave generation

Per Sparrevik

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Shear wave generator

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Reexamination Certificate

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System for subsea diverless metrology and hard-pipe...

Communications – electrical: acoustic wave systems and devices – Underwater system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2597704

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