Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4711486 | Barber and beauty parlor chair | — | 1987-12-08 |
| 4572573 | Dental chair operating apparatus | Noriyuki Yoshikawa | 1986-02-25 |
| 4515406 | Headrest for medical treatment chair | Kei Okamoto, Noriyuki Yoshikawa | 1985-05-07 |