Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364643 | Large aperture ratio photographic lens | — | 1982-12-21 |
| 4338012 | Focusing screen | Susumu Matsumura, Takashi Suzuki, Kazuya Matsumoto | 1982-07-06 |
| 4330188 | Focusing screen | Kazuo Fujibayashi | 1982-05-18 |
| 4310221 | Variable soft-focus lens | Shin Yamaguchi | 1982-01-12 |