4. Hydraulic and earth engineering
  5. Diving
  6. Suit or accessory therefor

Frankie Chen

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Amphibious audible alarm device

Hydraulic and earth engineering – Diving – Suit or accessory therefor
Patent

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Integrally-encased diving control valve means

Hydraulic and earth engineering – Diving – Suit or accessory therefor
Patent

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Scuba diving regulator

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate

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Triplicate diving gas valve device

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1286342

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