Issued Patents All Time
Showing 76–78 of 78 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5259032 | contact transducer assembly for hearing devices | Rodney C. Perkins | 1993-11-02 |
| 5197332 | Headset hearing tester and hearing aid programmer | — | 1993-03-30 |
| 4674112 | Character pattern recognition and communications apparatus | George V. Kondraske | 1987-06-16 |