TREA

Daniel K. Harden

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  • Palo Alto, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wrist communicator
    • Patent number D462336
    • Issue date Sep 3, 2002
    • AT&T Corp.
    • David L. Chaiken
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Open travel guide
    • Patent number D447476
    • Issue date Sep 4, 2001
    • AT&T Corp.
    • David L. Chaiken
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Closed travel guide
    • Patent number D447477
    • Issue date Sep 4, 2001
    • AT&T Corp.
    • David L. Chaiken
    • D14 - Recording, communication, or information retrieval equipment