Patents by Inventor Dale A. Nussdorfer

Dale A. Nussdorfer 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: D248647
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: July 25, 1978
    Assignee: Altec Corporation
    Inventor: Dale A. Nussdorfer
  • Loudspeaker
    Patent number: D250586
    Type: Grant
    Filed: April 15, 1976
    Date of Patent: December 19, 1978
    Assignee: Altec Corporation
    Inventors: Dale A. Nussdorfer, William L. Hayes