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John Echols

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  • Ventura, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Testing a circuit assembly that contains a piezoelectric switch
    • Patent number 9,140,757
    • Issue date Sep 22, 2015
    • Essex Electronics, Inc.
    • Douglas Hogg
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Touchless microwave switch
    • Patent number D738882
    • Issue date Sep 15, 2015
    • Essex Electronics, Inc.
    • Henry L. Miszkiewicz
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Smart card RFID reader
    • Patent number D724588
    • Issue date Mar 17, 2015
    • Essex Electronics, Inc.
    • Henry L. Miszkiewicz
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Access control apparatus
    • Patent number 7,063,471
    • Issue date Jun 20, 2006
    • Essex Electronics, Inc.
    • Peter Kaufman
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Keypad
    • Patent number D491087
    • Issue date Jun 8, 2004
    • Essex Electronics, Inc.
    • Peter Kaufman
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Keypad
    • Patent number D459671
    • Issue date Jul 2, 2002
    • Essex Electronics, Inc.
    • Peter Kaufman
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Weatherproof electronic keypad with replaceable graphics overlay
    • Patent number 5,674,018
    • Issue date Oct 7, 1997
    • Essex Electronics, Inc.
    • Peter Kaufman
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Piezoelectric electronic switch
    • Patent number 5,231,326
    • Issue date Jul 27, 1993
    • Essex Electronics, Inc.
    • John C. Echols
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Coupling circuit between high impedance piezoelectric signal source...
    • Patent number 4,490,639
    • Issue date Dec 25, 1984
    • Essex-Tec Corporation
    • John C. Echols
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Pressure sensitive electric signal generator
    • Patent number 4,458,173
    • Issue date Jul 3, 1984
    • Essex-Tec Corporation
    • Peter Kaufman
    • H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents