Thomas J. Ryan

Person

  • Del Mar, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Electrical switch for door chime

    • Patent number D406110
    • Issue date Feb 23, 1999
    • Fred M. Schildwachter & Sons Inc.
    • Thomas J. Ryan
    • D13 - Equipment for production, distribution, or transformation of energy