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

John Shelburne

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Apparatus for confined underwater cryogenic surface preparation

Cleaning and liquid contact with solids – Apparatus – With plural means for supplying or applying different fluids...
Reexamination Certificate

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Confined underwater cryogenic surface preparation

Cleaning and liquid contact with solids – Processes – Including forming a solidified or hardened coating for cleaning
Reexamination Certificate

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Localized acidic underwater surface cleaning apparatus

Cleaning and liquid contact with solids – Processes – For metallic – siliceous – or calcareous basework – including...
Reexamination Certificate

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Portable encapsulated underwater ultrasonic cleaner

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

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Underwater vacuum attachment device

Ships – Anchor – Suction type
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Profile ID: LFUS-PAI-P-2047403

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