Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7175923 | Optical instrument | Hirokazu Morozumi, Mitsuo Ohyama, Mitsuru Yajima, Kazuhiko Suda | 2007-02-13 |
| 5065520 | Reticule device for a fire sighting scope | Fumio Shimizu, Yasutoshi Nishikubo | 1991-11-19 |