Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861682 | Clad steel materials having excellent ductility and corrosion resistance | Tsuyoshi Kawano, Kaname Hasuka, Seiji Otomo | 1989-08-29 |
| 4820005 | Method of fixing a polygon mirror and an optical deflector having such polygon mirror | Hiroki Tajima | 1989-04-11 |