Patents Assigned to Ole Berland
  • Hearing aid with acoustical frequency response modification
    Patent number: 4090040
    Abstract: A hearing aid for individuals with a loss of sensitivity to the higher frequencies acoustically attenuates the lower frequencies by providing a sound reproducer coupled to a sound delivering conduit provided with an aperture of prescribed size coupled to a cavity which surrounds the sound reproducer.
    Type: Grant
    Filed: May 27, 1977
    Date of Patent: May 16, 1978
    Assignee: Ole Berland
    Inventor: Ole Berland