Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679946 | Photo-taking lens temperature compensation system | Hiromu Mukai, Rieko Hasegawa | 1997-10-21 |
| 5640271 | Self-housing binocular | Kiyoshi Nishitani, Hiroyuki Okada | 1997-06-17 |