Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5889869 | Invisible acoustic screen for open-plan offices and the like | Rafik Goubran | 1999-03-30 |
| D286403 | Console for teleconference communication | David Parshad, Waco Butram | 1986-10-28 |
| D283891 | Teleconferencing microphone | David Parshad | 1986-05-20 |
| 4436966 | Conference microphone unit | — | 1984-03-13 |
| 4330690 | Telephone group listening systems | — | 1982-05-18 |