Patents by Inventor Michael B. Critchfield

Michael B. Critchfield 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).

  • Game feeder
    Patent number: D518245
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: March 28, 2006
    Assignee: D&D Enterprises
    Inventors: Ronald S. Denslow, Michael B. Critchfield