TREA

Toshio Furuta

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Shield machine
    • Patent number 4,558,906
    • Issue date Dec 17, 1985
    • Mitsui Kensetsu Kabushiki Kaisha
    • Shigeo Takamiya
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Shield driving process for enlargement
    • Patent number 4,530,621
    • Issue date Jul 23, 1985
    • Mitsui Kensetsu Kabushiki Kaisha
    • Toshio Furuta
    • E21 - EARTH DRILLING MINING