TREA

Toshimi Sakai

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  • Ibaraki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Overwinding prevention device for winch
    • Patent number 6,644,629
    • Issue date Nov 11, 2003
    • Hitachi Construction Machinery Co., Ltd.
    • Shinobu Higashi
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Swivel control apparatus
    • Patent number 6,339,929
    • Issue date Jan 22, 2002
    • Hitachi Construction Machinery Co., Ltd.
    • Tsutomu Udagawa
    • B66 - HOISTING LIFTING HAULING