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Hiroya Usui

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Liquid crystal display apparatus
    • Patent number 4,653,867
    • Issue date Mar 31, 1987
    • Sony Corporation
    • Tetsuo Urabe
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS