TREA

Matthew Engstrom

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  • Evanston, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Control assembly for audio device
    • Patent number D579918
    • Issue date Nov 4, 2008
    • Shure Acquisition Holdings, Inc.
    • Matthew Engstrom
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone portion
    • Patent number D557253
    • Issue date Dec 11, 2007
    • Shure Acquisitions Holdings, Inc.
    • Matthew K. Engstrom
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Earphone portion
    • Patent number D557254
    • Issue date Dec 11, 2007
    • Shure Acquisition Holdings, Inc.
    • Matthew K. Engstrom
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Pair of earphones
    • Patent number D532770
    • Issue date Nov 28, 2006
    • Shure Acquisiton Holdings, Inc.
    • Matthew Engstrom
    • D14 - Recording, communication, or information retrieval equipment