Patents by Inventor David Stephen Ralph

David Stephen Ralph 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).

  • Educational game board game piece
    Patent number: D794130
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: August 8, 2017
    Assignee: Mighty Writer Limited
    Inventor: David Stephen Ralph
  • Game board for an educational game
    Patent number: D834095
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: November 20, 2018
    Assignee: Mighty Writer Limited
    Inventor: David Stephen Ralph