TREA

Toshio Hasegawa

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  • Ibaraki-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Working apparatus for construction machine
    • Patent number 6,564,480
    • Issue date May 20, 2003
    • Hitachi Construction Machinery Co., Ltd.
    • Sadahisa Tomita
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Joint pin lock mechanism for pivotal pin joint
    • Patent number 6,273,632
    • Issue date Aug 14, 2001
    • Hitachi Construction Machinery Co., Ltd.
    • Ei Takahashi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Offset boom type construction machine
    • Patent number 5,525,028
    • Issue date Jun 11, 1996
    • Hitachi Construction Machinery Co., Ltd.
    • Manabu Ogasawara
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING