Patents Assigned to Maico Hearing Instruments Inc.
  • Directional hearing aids
    Patent number: 3946168
    Abstract: A miniature hearing aid unit to be fitted to and carried on a person's head; there being a directional microphone in the housing which has front and rear sound admitting openings to respectively supply sounds to the fore and aft ports of the directional microphone; the rear opening in the hearing aid housing being located significantly closer to the inner side of the housing than the forward opening so that the alignment between front and rear openings is at an oblique angle of approximately 20.degree. relative to the frontal direction.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: March 23, 1976
    Assignee: Maico Hearing Instruments Inc.
    Inventor: David A. Preves