Patents by Inventor Donald Esselborn

Donald Esselborn 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).

  • Publication number: 20090200110
    Abstract: A system of ladder accessories that enhance the resistance of an extension ladder from slipping on a wide range of support surfaces is disclosed. The invention provides anti-slip surfaces for gripping to hard, granular, smooth, porous, non-porous and irregular ladder supporting surfaces using light and easy to carry ladder accessories. The system also includes ladder stabilizers that reduce the horizontal forces acting upon the anti-slip surfaces for further resistance to slipping.
    Type: Application
    Filed: October 19, 2008
    Publication date: August 13, 2009
    Inventor: Donald Esselborn