Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6807261 | Digital key telephone set and digital key telephone system | Toshiaki Tanaka, Takeshi Horiuchi | 2004-10-19 |
| 6759274 | Semiconductor chip pick-up method | Kazuhisa Arai, Kouichi Yajima | 2004-07-06 |