Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910781 | Code excited linear predictive vocoder using virtual searching | Richard Harry Ketchum, Willem Bastiaan Kleijn | 1990-03-20 |
| 4899385 | Code excited linear predictive vocoder | Richard Harry Ketchum, Willem Bastiaan Kleijn | 1990-02-06 |