TREA

Junko Hirata

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  • Chiba, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Telephone having a hold function
    • Patent number 5,835,587
    • Issue date Nov 10, 1998
    • Sony Corporation
    • Shizuo Adachi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone having a hold function
    • Patent number 5,784,458
    • Issue date Jul 21, 1998
    • Sony Corporation
    • Shizuo Adachi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE