4. Communications: electrical
  5. Condition responsive indicating system
  6. Specific condition

James E. Halwachs

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Sonar location monitor

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

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Swimmer location monitor

Communications: electrical – Condition responsive indicating system – Specific condition
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Profile ID: LFUS-PAI-P-628051

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