TREA

Yuji Mitsuta

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Blind person guide device
    • Patent number 4,712,003
    • Issue date Dec 8, 1987
    • Itsuki Ban
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Blind guide device
    • Patent number 4,648,710
    • Issue date Mar 10, 1987
    • Itsuki Ban
    • G01 - MEASURING TESTING