4. Hydraulic and earth engineering
  5. Underground passageway, e.g., tunnel
  6. Boring

Takashi Sakuraya

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Grinding machine for use with rolling mill

Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent

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Shield tunneling machine

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring
Patent

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Profile ID: LFUS-PAI-P-429128

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