TREA

Keizo Kumai

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  • Nagaokakyou, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Head-mounted display device
    • Patent number 6,771,424
    • Issue date Aug 3, 2004
    • Shimadzu Corporation
    • Hisashi Amafuji
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE