4. Communications, electrical: acoustic wave systems and devices
  5. Signal transducers
  6. Underwater type

Jon-Fredrik Hopperstad

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Method and apparatus for controlling the acoustic output of...

Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate

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Method and apparatus for controlling the acoustic output of...

Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate

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Methods and systems for determining signatures for arrays of...

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2372779

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