LandOfFree - US Patents - Listing for Excavating,Beneath a body of water

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Deposit discharge system and method of discharging deposit

Excavating – Beneath a body of water – Suction

Reexamination Certificate

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Device and method for bringing ashore or refloating a...

Excavating – Beneath a body of water – Suction

Reexamination Certificate

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Device for excavating an elongated depression in soil

Excavating – Beneath a body of water – With means to scour or scrape

Patent

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Device for removing sludge from the bottom of a lagoon

Excavating – Beneath a body of water – By use of submarine or undersea vessel

Reexamination Certificate

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Digging and backfill apparatus

Excavating – Beneath a body of water – Suction

Reexamination Certificate

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Draghead for a trailing suction hopper and process for...

Excavating – Beneath a body of water – Suction

Reexamination Certificate

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Dredge

Excavating – Beneath a body of water – With vessel – propulsion – or anchor structure

Patent

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Dredge cutterhead

Excavating – Beneath a body of water – Suction

Reexamination Certificate

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Dredge cutterhead

Excavating – Beneath a body of water – Suction

Reexamination Certificate

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Dredge head for dredging sludge by a trailing or pushing motion

Excavating – Beneath a body of water – Suction

Patent

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Dredge propulsion system

Excavating – Beneath a body of water – With vessel – propulsion – or anchor structure

Reexamination Certificate

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Dredge rotary cutter head

Excavating – Beneath a body of water – Suction

Patent

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Dredge with improved auger shroud

Excavating – Beneath a body of water – Suction

Reexamination Certificate

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Dredger with lockable rear door

Excavating – Beneath a body of water – Scoop or bucket

Patent

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Dredging apparatus

Excavating – Beneath a body of water

Reexamination Certificate

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Dredging apparatus

Excavating – Beneath a body of water – Suction

Patent

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Dredging apparatus

Excavating – Beneath a body of water – With means to scour or scrape

Patent

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Dredging installation

Excavating – Beneath a body of water – Suction

Patent

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Dredging installation

Excavating – Beneath a body of water – Suction

Patent

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Dredging method and apparatus

Excavating – Beneath a body of water – With means to control dredger operation in response to...

Reexamination Certificate

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