Patents by Inventor Alfonso Thomas

Alfonso Thomas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Air heating and filtering apparatus
    Patent number: 4539896
    Abstract: A heat zoning apparatus which comprises air filtering and smoke detecting as well as heat zoning control primarily for residential applications wherein more than a one story building is occupied with a single zone heating system. Embodiments for various mounting and configurations are disclosed as well as smoke detection and inhabitant warning and life saving devices.
    Type: Grant
    Filed: October 13, 1983
    Date of Patent: September 10, 1985
    Inventor: Alfonso Thomas