Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6050634 | Device for adjusting height of an armrest for chair | Hideyuki Yamagishi, Masayuki Ozawa, Naokuni Nakata | 2000-04-18 |
| 5944386 | Armrest device for chair | Hideyuki Yamagishi, Masayuki Ozawa, Naokuni Nakata | 1999-08-31 |