Patents by Inventor Kenneth E. Butler

Kenneth E. Butler 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).

  • Keepsake box
    Patent number: D370998
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: June 25, 1996
    Inventor: Kenneth E. Butler