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Izumi Yamaguchi

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  • Ohmiya, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Disk cleaning mat
    • Patent number 4,574,418
    • Issue date Mar 11, 1986
    • Kabushiki Kaisha Nagaoka
    • Izumi Yamaguchi
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Level with two guide frames and ball in each
    • Patent number 4,514,908
    • Issue date May 7, 1985
    • Kabushiki Kaisha Nagaoka
    • Izumi Yamaguchi
    • G01 - MEASURING TESTING