Patents by Inventor Mark A. Ritz

Mark A. Ritz 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).

  • Door panel for a residential gas furnace
    Patent number: D502254
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: February 22, 2005
    Assignee: York International Corporation
    Inventors: Mickey S. Smith, Daniel J. Arnold, Thomas D. Chase, Byron R. Davidson, Bryan K. Rocky, Mark A. Ritz, Doug J. Widenmann