Patents by Inventor Wilhelm Erwig

Wilhelm Erwig 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).

  • Method of and device for drying grass surfaces
    Patent number: 7134262
    Abstract: Drying of wet ground surfaces provided with stalks includes removing droplets from stalks with comb-shaped slitted, cubical or squared projections provided on an underside of a broad plank, and guiding the removed droplets along the slitted, cubical or squared projections toward lower edges of the slitted, cubical or squared projections and from there onto the ground surface.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: November 14, 2006
    Inventor: Wilhelm Erwig
  • Method of and device for drying grass surfaces
    Publication number: 20030204922
    Abstract: Drying of wet ground surfaces provided with stalks includes removing droplets from stalks with comb-shaped slitted, cubical or squared projections provided on an underside of a broad plank, and guiding the removed droplets along the slitted, cubical or squared projections toward lower edges of the slitted, cubical or squared projections and from there onto the ground surface.
    Type: Application
    Filed: May 29, 2003
    Publication date: November 6, 2003
    Inventor: Wilhelm Erwig
  • Method of and device for drying grass surfaces
    Publication number: 20020017093
    Abstract: Drying of wet ground surfaces provided with stalks includes removing droplets from stalks with comb-shaped projections, and guiding the removed droplets along the projections toward lower edges of the projections and from there onto the ground surface.
    Type: Application
    Filed: July 12, 2001
    Publication date: February 14, 2002
    Inventor: Wilhelm Erwig