Patents by Inventor Dennis Tongue

Dennis Tongue 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).

  • Gas heater
    Patent number: D294289
    Type: Grant
    Filed: December 1, 1983
    Date of Patent: February 16, 1988
    Assignee: Valor Heating Limited
    Inventor: Dennis Tongue
  • Gas heater
    Patent number: D294632
    Type: Grant
    Filed: December 1, 1983
    Date of Patent: March 8, 1988
    Assignee: Valor Heating Limited
    Inventor: Dennis Tongue
  • Cabinet for visual colour assessment
    Patent number: D728282
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: May 5, 2015
    Assignee: Verivide Ltd.
    Inventors: Stephen Dennis Tongue, John Kenneth Dakin