Blonder, Greg2019-08-012019-08-012015-02-262014-08-19Greg Blonder. "Audio bass resonator." U.S. Patent application 14/463,119.14/463,119https://hdl.handle.net/2144/36928A headphone comprising: at least one speaker housing comprising at least a first surface with a first opening and a second surface with second opening; at least one resonator designed to cover at least a portion of the second opening of the second surface; at least one speaker, at least a portion of the speaker disposed within the speaker housing proximate to the first opening of the first surface of the speaker housing.Audio equipmentPatent438185