TREA

John Spangler

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  • Knoxville, TN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Collar receiver
    • Patent number D1007785
    • Issue date Dec 12, 2023
    • Radio Systems Corporation
    • Andrew Geouque
    • D30 - Animal husbandry
  • Information Patent Grant

    Pet boundary transmitter
    • Patent number D986753
    • Issue date May 23, 2023
    • Radio Systems Corporation
    • Darrell Douglas
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Pet boundary collar receiver
    • Patent number D986512
    • Issue date May 16, 2023
    • Radio Systems Corporation
    • Darrell Douglas
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Pet boundary control panel
    • Patent number D985407
    • Issue date May 9, 2023
    • Radio Systems Corporation
    • Darrell Douglas
    • D10 - Measuring, testing, or signalling instruments