Patents by Inventor Keld Hansson

Keld Hansson 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).

  • In-wall loudspeaker
    Patent number: D306592
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: March 13, 1990
    Assignee: Bang & Olufsen of America, Inc.
    Inventor: Keld Hansson