Patents by Inventor Mary L. Burden

Mary L. Burden 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).

  • Ring
    Patent number: D528456
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: September 19, 2006
    Inventors: Harold W. Thompson, Mary L. Burden
  • Ring
    Patent number: D533802
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: December 19, 2006
    Inventors: Harold W. Thompson, Mary L. Burden