Patents by Inventor Virginia E. Marx

Virginia E. Marx 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).

  • Greenhouse lava rock cooling pad
    Patent number: 4597272
    Abstract: An evaporative cooling system for cooling a greenhouse uses lava rocks as the medium. The cooling system includes a grid mounted to an aperture in a wall. Lava rocks are contained in the grid. Water is dispensed on the rocks for causing evaporation. A fan located forwardly draws air through the rocks. The grid extends rearwardly of the aperture and is inclined. The water is dispensed by spray nozzles.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: July 1, 1986
    Inventors: Richard J. Marx, II, Virginia E. Marx