Patents by Inventor David Arthur Vaughn John

David Arthur Vaughn John 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).

  • Display signs comprising a flat panel loudspeaker
    Patent number: 6956492
    Abstract: A display sign is in the form of a flat panel loudspeaker, the graphics of the display being carried on one exposed surface of the flat panel, the latter being provided with one or more transducers such that the flat panel may be energized to transmit sound in accordance with signals supplied to the one or more transducers. The sign may also be provided with an arrangement for storing inputs made by a user for later retrieval.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: October 18, 2005
    Assignee: Talksign Limited
    Inventors: Michael Andrew Beadman, Michael Anthony Saunders, David Arthur Vaughn John
  • Display signs
    Publication number: 20040075573
    Abstract: A display sign is in the form of a flat panel loudspeaker, the graphics of the display being carried on one exposed surface of the flat panel, the latter being provided with one or more transducers whereby the flat panel may be energised to transmit sound in accordance with signals supplied to the one or more transducers. The sign may also be provided with means for storing inputs made by a user for later retrieval.
    Type: Application
    Filed: November 3, 2003
    Publication date: April 22, 2004
    Inventors: Michael Andrew Beadman, Michael Anthony Saunders, David Arthur Vaughn John