Patents by Inventor Karen Elisabeth Walker

Karen Elisabeth Walker 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).

  • Identification tag
    Patent number: D636819
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: April 26, 2011
    Inventor: Karen Elisabeth Walker