Patents by Inventor Richard Julian Clark

Richard Julian Clark 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).

  • Illuminated exit sign
    Patent number: D566193
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: April 8, 2008
    Assignee: GDRC Limited
    Inventors: Richard Julian Clark, David Richard Vernon-Dier
  • Illuminated exit sign
    Patent number: D566194
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: April 8, 2008
    Assignee: GDRC Limited
    Inventors: Richard Julian Clark, David Richard Vernon-Dier