TREA

Daishiro Miyazaki

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  • Gifu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Excavation tool
    • Patent number 5,139,099
    • Issue date Aug 18, 1992
    • Mitsubishi Materials Corporation
    • Takeshi Hayashi
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Excavation tool
    • Patent number 5,113,954
    • Issue date May 19, 1992
    • Mitsubishi Materials Corporation
    • Takeshi Hayashi
    • E21 - EARTH DRILLING MINING