TREA

Kazuhisa Ogawa

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

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    • Patent number D283509
    • Issue date Apr 22, 1986
    • Hitachi, Ltd.
    • Masato Shibayama
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

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    • Patent number D273784
    • Issue date May 8, 1984
    • Hitachi, Ltd.
    • Masato Shibayama
    • D14 - Recording, communication, or information retrieval equipment