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Hiroaki Okinaga

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary cutter wheel
    • Patent number 5,040,341
    • Issue date Aug 20, 1991
    • Hiroaki Okinaga
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Drill
    • Patent number 4,854,788
    • Issue date Aug 8, 1989
    • Nikken Tool Co., Ltd.
    • Hiroaki Okinaga
    • B28 - WORKING CEMENT, CLAY, OR STONE