4. Communications: electrical
  5. Selective
  6. Having indication or alarm

Roger Hutchins

Inventor

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Heave compensation system

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent

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Heave compensation system

Communications: electrical – Selective – Monitoring in addition to control
Patent

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Underwater transient sound generator having pressure compensatin

Communications: electrical – Selective – Having indication or alarm
Patent

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Profile ID: LFUS-PAI-P-417145

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