Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5895220 | Audio frequency converter for audio-phonatory training | Isi Beller | 1999-04-20 |
| 5573403 | Audio frequency converter for audio-phonatory training | Isi Beller | 1996-11-12 |
| 4895519 | Audio-frequency converter apparatus, installation including said apparatus for treating subjects suffering from audio-phonatory and auditive-verbal disorders, and a method of using such an installation | Isi Beller | 1990-01-23 |
| 4708657 | Audio-frequency converter apparatus, for treating subjects suffering from audio-phonatory and auditive-verbal disorders, and a method of using the apparatus | Isi Beller | 1987-11-24 |