Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821065 | Recording apparatus having controllable recording beam states | Hiroaki Ishii, Yukio Sato, Masafumi Wataya | 1989-04-11 |
YU
Yutaka Udagawa
Overall (1989): #39,229 of 140,708Top 30%
1
Patents 1989