Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877314 | Objective lens system for endoscopes | — | 1989-10-31 |
| 4867136 | Endoscope apparatus | Akira Suzuki, Susumu Takahashi, Takeaki Nakamura, Tatsuya Yamaguchi, Takashi Tsukaya +19 more | 1989-09-19 |
| 4801792 | Endoscope | Nobuo Yamasita, Shinichiro Hattori | 1989-01-31 |