Patents by Inventor Ian Frederick Johnson

Ian Frederick 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).

  • Door for gaming machine
    Patent number: D452535
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: December 25, 2001
    Assignee: Aristocrat Technologies Australia Pty Ltd.
    Inventors: Ian Frederick Johnson, Vladimir Halic, Richard Sokolov, Errol D'Souza
  • Gaming machine
    Patent number: D406612
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: March 9, 1999
    Assignee: Aristocrat Leisure Industries Pty Ltd
    Inventor: Ian Frederick Johnson