TREA

Mark E. Engebretson

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  • Encino, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rigging system for line array speakers
    • Patent number 8,170,263
    • Issue date May 1, 2012
    • Harman International Industries, Incorporated
    • Mark Engebretson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Suspension system
    • Patent number 7,997,552
    • Issue date Aug 16, 2011
    • Harman International Industries, Incorporated
    • Mark Engebretson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Spiral line array loudspeaker
    • Patent number 7,606,384
    • Issue date Oct 20, 2009
    • QSC Audio Products, Inc.
    • Mark E. Engebretson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Curved line array loudspeaker
    • Patent number 7,606,383
    • Issue date Oct 20, 2009
    • QSC Audio Products, Inc.
    • Mark E. Engebretson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Suspension system
    • Patent number 7,516,932
    • Issue date Apr 14, 2009
    • Harman International Industries, Incorporated
    • Mark Engebretson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Arbitrary coverage angle sound integrator
    • Patent number 7,333,626
    • Issue date Feb 19, 2008
    • Harman International Industries, Incorporated
    • Scott M. Opie
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Arbitrary coverage angle sound integrator
    • Patent number 7,324,654
    • Issue date Jan 29, 2008
    • Harman International Industries, Inc.
    • Scott M. Opie
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Rigging system for line array speakers
    • Patent number 7,298,860
    • Issue date Nov 20, 2007
    • Harman International Industries, Incorporated
    • Mark Engebretson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    System for integrating mid-range and high-frequency acoustic source...
    • Patent number 7,134,523
    • Issue date Nov 14, 2006
    • Harman International Industries, Incorporated
    • Mark Engebretson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Radiation boundary integrator for a loudspeaker system
    • Patent number D450778
    • Issue date Nov 20, 2001
    • Harman International Industries, Incorporated
    • Mark Engebretson
    • D21 - Games, toys, and sports goods

Patents Applicationslast 30 patents