Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 5201007 | Apparatus and method for conveying amplified sound to ear An earmold and a method of manufacturing an earmold for a hearing aid that conveys amplified sound from the hearing aid into the ear canal to a closed cavity adjacent the tympanic membrane. The earmold includes an acoustic conduction tube having an extern... | 04/06/1993 |
| 5068902 | Method and apparatus for reducing acoustical distortion A method and apparatus for reducing distortion of an acoustical waveform by locating a plurality of microspheres to interact with interfering acoustical waveforms are described.... | 11/26/1991 |
| 5031219 | Apparatus and method for conveying amplified sound to the ear An earmold and a method of manufacturing an earmold for a hearing aid that conveys amplified sound from the hearing aid into the ear canal to a closed cavity adjacent the tympanic membrane. The earmold includes an acoustic conduction tube having an extern... | 07/09/1991 |
| 4811402 | Method and apparatus for reducing acoustical distortion A method and apparatus for reducing distortion of an acoustical waveform by locating a plurality of microspheres to interact with interfering acoustical waveforms.... | 03/07/1989 |
