Patents by Inventor Robert Matthew Johnson

Robert Matthew Johnson 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).

  • Air intake stack
    Patent number: D594399
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: June 16, 2009
    Inventor: Robert Matthew Johnson