Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6359206 | Tone signal processing apparatus with intermittent clock supply | Tetsuji Ichiki | 2002-03-19 |
| 6351475 | Mixing apparatus with compatible multiplexing of internal and external voice signals | — | 2002-02-26 |