Patents by Inventor David K. McCullough

David K. McCullough 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).

  • Cough silencer
    Patent number: D569499
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: May 20, 2008
    Assignee: Catalyst Industries, Inc.
    Inventor: David K. McCullough