Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868351 | Input pen data input tablet | Shoyu Watanabe, Shuji Iwata, Osamu Nakajima, Yusaku Saitoh | 1989-09-19 |
| 4841290 | Display unit | Syoyu Watanabe, Yusaku Saito, Syuji Iwata | 1989-06-20 |