Patents by Inventor Dennis C. Ward

Dennis C. Ward 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).

  • Loudspeaker
    Patent number: D254251
    Type: Grant
    Filed: October 18, 1977
    Date of Patent: February 19, 1980
    Inventor: Dennis C. Ward
  • Loudspeaker
    Patent number: D264463
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: May 18, 1982
    Inventor: Dennis C. Ward
  • Loudspeaker
    Patent number: D264464
    Type: Grant
    Filed: September 16, 1980
    Date of Patent: May 18, 1982
    Inventor: Dennis C. Ward
  • Loudspeaker
    Patent number: D273862
    Type: Grant
    Filed: November 24, 1981
    Date of Patent: May 15, 1984
    Inventor: Dennis C. Ward