Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5640271 | Self-housing binocular | Yasumasa Sugihara, Hiroyuki Okada | 1997-06-17 |
| 5610761 | Telescope having mechanism for automatically returning optical system to a reference dioptric power | Kenji Ishibashi, Kazuo Kimura, Iwao Ishida | 1997-03-11 |