TREA

Hiroshi Ohta

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  • Chigasaki, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ground excavating apparatus
    • Patent number 4,070,772
    • Issue date Jan 31, 1978
    • Kabushiki Kaisha Komatsu Seisakusho
    • Mitsuteru Motomura
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Ground excavating apparatus
    • Patent number 4,026,604
    • Issue date May 31, 1977
    • Kabushiki Kaisha Komatsu Seisakusho
    • Mitsuteru Motomura
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Tunnel excavator
    • Patent number 3,985,390
    • Issue date Oct 12, 1976
    • Kabushiki Kaisha Komatsu Seisakusho
    • Chiaki Kojima
    • E21 - EARTH DRILLING MINING