TREA

John D. Crisco

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  • Ellicott City, MD, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker
    • Patent number D463407
    • Issue date Sep 24, 2002
    • Britannia Investment Corporation
    • Keith A. Ballard
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Portion of a speaker
    • Patent number D448360
    • Issue date Sep 25, 2001
    • Britannia Investment Corporation
    • Keith A. Ballard
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Portion of a speaker
    • Patent number D440559
    • Issue date Apr 17, 2001
    • Britannia Investment Corporation
    • Keith A. Ballard
    • D14 - Recording, communication, or information retrieval equipment