Patents by Inventor Christopher Michael Larson

Christopher Michael Larson 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).

  • Supplemental cover apparatus and method for access openings
    Publication number: 20090252552
    Abstract: A supplemental access cover is adapted to cover an access cover. The supplemental access cover includes a layer of material having a thickness in the range of 0.01 inch to 1.5 inches, and an apparatus for attaching the layer of material to the access cover. A method for paving uses the supplemental access cover. The method includes locating an access cover within an area to be paved, attaching a supplemental cover to the access cover, and paving over the access cover and the supplemental cover. The method for paving also includes relocating the access cover, and removing the supplemental cover from the access cover.
    Type: Application
    Filed: April 7, 2008
    Publication date: October 8, 2009
    Inventors: Dwight G. Wiedrich, Christopher Michael Larson, James Lee McCain, Lee Dean Mastell