Patents by Inventor Duane D. Kriegshauser

Duane D. Kriegshauser 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).

  • Landscape and agricultural sprayer foam marking attachment
    Patent number: 6969010
    Abstract: A foam marking attachment to a lawn and garden tractor or tractor mounted agricultural implement spray apparatus attaches to a low voltage DC power supply of the tractor, applying a left or right side droplet of liquid marking foam to the outer edge of a traveled path, marking the traveled edge of application of a liquid spray from the spray apparatus, preventing over application to an area to be treated with the liquid spray and preventing non-application of the liquid spray the area to be treated with the liquid spray. The attachment may be used when applying liquid fertilizer, pesticide or herbicide to a golf course, yard, field, garden plot or other landscape area, and is used in place of colored spray or dyes which discolor the treated area and may be transferred to person, other objects or clothing.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: November 29, 2005
    Inventor: Duane D. Kriegshauser
  • Multiple outlet valve for measured gauged flow
    Patent number: D502762
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: March 8, 2005
    Inventor: Duane D. Kriegshauser