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Hiroshi Yamada

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Patents Grantslast 30 patents

  • Information Patent Grant

    Objective lens systems
    • Patent number 5,889,617
    • Issue date Mar 30, 1999
    • Nikon Corporation
    • Hiroshi Yamada
    • G02 - OPTICS
  • Information Patent Grant

    Objective lens system
    • Patent number 5,708,531
    • Issue date Jan 13, 1998
    • Nikon Corporation
    • Hiroshi Yamada
    • G02 - OPTICS