TREA

John C. Crenshaw

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  • Joliet, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Housing for alarm device
    • Patent number D259926
    • Issue date Jul 21, 1981
    • General Time Corporation
    • Ellworth R. Danz
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Timer
    • Patent number D251058
    • Issue date Feb 13, 1979
    • General Time Corporation
    • Ellworth R. Danz
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Clock
    • Patent number D247741
    • Issue date Apr 18, 1978
    • General Time Corporation
    • Ellworth R. Danz
    • D10 - Measuring, testing, or signalling instruments