TREA

Kenneth R. Hackett

Follow

Person

  • Boulder, CO, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Ultrasonic intrusion alarm
    • Patent number D242779
    • Issue date Dec 21, 1976
    • Sontrix, Inc.
    • Ralph W. Goble
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Ultrasonic intrusion alarm
    • Patent number D242778
    • Issue date Dec 21, 1976
    • Sonitrix, Inc.
    • Ralph W. Goble
    • D10 - Measuring, testing, or signalling instruments