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Apparatus with flexibly mounted spud carriage

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

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Bidirectional dredge apparatus

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

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Bucket for a mechanical shovel

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

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Carry scraper ships

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

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Dredge

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

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

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Method of and apparatus for anchor installation

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

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Method of and apparatus for installation of plate anchors

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

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Underwater site clearance sweep apparatus and method

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

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