William G. Kahl Jr.

Person

  • Brookfield, CT, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Ultrasonic intrusion detector

    • Patent number D248930
    • Issue date Aug 15, 1978
    • Arrowhead Enterprises, Inc.
    • William G. Kahl
    • D10 - Measuring, testing, or signalling instruments