TREA

David P. Dornfeld

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  • Killingworth, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Volume scaling and synchronization of tones
    • Patent number 11,863,146
    • Issue date Jan 2, 2024
    • Whelen Engineering Company, Inc.
    • Brandon Conlon
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    System and method for noise cancellation in emergency response vehi...
    • Patent number 10,482,869
    • Issue date Nov 19, 2019
    • Whelen Engineering Company, Inc.
    • Brandon Conlon
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Lever switch
    • Patent number 7,655,875
    • Issue date Feb 2, 2010
    • Whelen Engineering Company, Inc.
    • David P. Dornfeld
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electronic siren
    • Patent number 6,646,548
    • Issue date Nov 11, 2003
    • Whelen Engineering Company, Inc.
    • David P. Dornfeld
    • G08 - SIGNALLING

Patents Applicationslast 30 patents