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Air tube protected by belts

Ships – Building – Insubmergible vessels
Patent

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Amphibious vehicle having an inflatable pontoon

Ships – Building – Insubmergible vessels
Reexamination Certificate

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Automatic inflating boat flotation device

Ships – Building – Insubmergible vessels
Reexamination Certificate

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Automatic inflating watercraft flotation device

Ships – Building – Insubmergible vessels
Reexamination Certificate

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Boat designed to withstand the force of underwater explosions

Ships – Building – Insubmergible vessels
Patent

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Deployable flotation device

Ships – Building – Insubmergible vessels
Patent

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Emergency buoyancy system

Ships – Building – Insubmergible vessels
Reexamination Certificate

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Emergency floatation device for watercraft

Ships – Building – Insubmergible vessels
Patent

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Emergency floatation system for a water craft

Ships – Building – Insubmergible vessels
Patent

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Flotation collar

Ships – Building – Insubmergible vessels
Patent

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Hollow body with flexible envelope

Ships – Building – Insubmergible vessels
Patent

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Inflating aircraft flotation device

Ships – Building – Insubmergible vessels
Reexamination Certificate

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Inflating watercraft flotation device

Ships – Building – Insubmergible vessels
Reexamination Certificate

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Inflating watercraft flotation device

Ships – Building – Insubmergible vessels
Reexamination Certificate

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Inflating watercraft flotation device

Ships – Building – Insubmergible vessels
Reexamination Certificate

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Inflating watercraft flotation device

Ships – Building – Insubmergible vessels
Reexamination Certificate

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Internal liners for oil tankers or barges to minimize oil spills

Ships – Building – Insubmergible vessels
Patent

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Multi-hull self rescuing system

Ships – Building – Insubmergible vessels
Patent

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Safety device for rendering a boat unsinkable

Ships – Building – Insubmergible vessels
Patent

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Sailboat mast floatation device

Ships – Building – Insubmergible vessels
Patent

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