TREA

Mitsuhiro Okamoto

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  • Sayama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multicolor display apparatus
    • Patent number 5,627,563
    • Issue date May 6, 1997
    • Citizen Watch Co., Ltd.
    • Tadahiko Nakagiri
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Multicolor display apparatus
    • Patent number 5,515,075
    • Issue date May 7, 1996
    • Citizen Watch Co., Ltd.
    • Tadahiko Nakagiri
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS