TREA

Kazuto Hamada

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Shield excavator
    • Patent number 5,538,362
    • Issue date Jul 23, 1996
    • Kabushiki Kaisha Iseki Kaihatsu Koki
    • Toshio Akesaka
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Rectangular shield excavating machine
    • Patent number 5,190,407
    • Issue date Mar 2, 1993
    • Kabushiki Kaisha Iseki Kaihatsu Koki
    • Toshio Akesaka
    • E21 - EARTH DRILLING MINING