4. Excavating
  5. Ditcher
  6. Having endless digger

Katsumi Kitanaka

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Cast-in-place piling method and apparatus

Hydraulic and earth engineering – Foundation – Columnar structure
Patent

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Divided-bucket type rotary excavator

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent

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Endless chain type cutter

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

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Excavating apparatus

Excavating – Ditcher – Having endless digger
Patent

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Excavator for constructing underground continuous wall and const

Excavating – Ditcher – Having endless digger
Patent

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Profile ID: LFUS-PAI-P-116949

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