TREA

Hiroshi Haga

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  • Hitachinaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Portable electric hammer drill
    • Patent number D520838
    • Issue date May 16, 2006
    • Hitachi Koki Co., Ltd.
    • Masanori Okada
    • D08 - Tools and hardware
  • Information Patent Grant

    Portable electric hammer drill
    • Patent number D503078
    • Issue date Mar 22, 2005
    • Hitachi Koki Co., Ltd.
    • Masato Sakai
    • D08 - Tools and hardware