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Apparatus and a method for constructing an underground...

Excavating – Endless digger
Reexamination Certificate

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Chain assembly

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Chain trencher having head shaft wear plates

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
Patent

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Clearing chain for excavating bulk material

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Cutting element supported on a chain

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Cutting element supported on a drum

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Cutting tooth for a trencher chain

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Cutting tooth for trencher chain

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Cylindrical cutting element supported on a chain

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Cylindrical cutting element supported on a drum

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Ditch digger

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
Reexamination Certificate

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Endless chain type cutter

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Excavator and a method for constructing an underground...

Excavating – Endless digger
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Method and system for supporting construction of underground...

Excavating – Endless digger
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Rebuildable elevator flight for scraper

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Trenching chain tooth and method for cutting into a body of...

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Wear resistant offset sidebar chain

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
Patent

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Wide multiple-chain trenching machine

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Wide multiple-chain trenching machine

Excavating – Endless digger – Digging chain – bucket – blade – or tooth structure – per se
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Work control system for a trencher type excavator for soil...

Excavating – Endless digger
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