Patents by Inventor Keith I. Ritterhouse

Keith I. Ritterhouse 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).

  • Adjustable cushioned headrest
    Patent number: 6126237
    Abstract: An adjustable assembly for securing a cushion in a plurality of positions on the seat back of a lawn chair. In a preferred embodiment, two adjustable assemblies are used to secure a cushion to the seat back. One assembly is secured to each side of the seat back.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: October 3, 2000
    Inventor: Keith I. Ritterhouse