Patents by Inventor Dewey Mixson

Dewey Mixson 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).

  • Geothermal heating and air conditioning system
    Patent number: 4920757
    Abstract: A geothermal heating and air conditioning system having heat exchange coils located vertically in the ground is provided with a condenser receiver and a metering system which allows a relatively large amount of refrigerant to be used within the system for maximum efficiency without the problems of liquid refrigerant buildup which have been previously associated with geothermal systems using vertical coils.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: May 1, 1990
    Inventors: Jimmy Gazes, Dewey Mixson