Patents by Inventor Karen Winfield

Karen Winfield 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).

  • Refuse bin
    Patent number: D441933
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: May 8, 2001
    Assignee: Southern Gold Resources Ltd.
    Inventors: Alan C. Savage, Greg Corrigan, Karen Winfield