Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322541 | Method of producing glass blank | Shoji Nakamura, Tadayoshi Yonemoto, Masaaki Sunohara, Tadao Shioyama, Noriyuki Kawata | 1994-06-21 |
| 5321554 | Inverse telescopic wide angle lens | Toshiro Ishiyama | 1994-06-14 |