Patents by Inventor Nils Peter Mickelson

Nils Peter Mickelson 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).

  • Auditory feedback device
    Patent number: 6229901
    Abstract: An auditory feedback device is provided for singers or the hearing-impaired to better hear their own voice. The device uses sound guides with reflective surfaces shaped to reflect sounds from the user's mouth to the user's ear.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: May 8, 2001
    Inventors: Nils Peter Mickelson, Raymond C. Miller