Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771434 | Optical device | Ken Hirunuma, Atsumi Kaneko | 2004-08-03 |
| 6760163 | Optical-position adjusting device for optical unit | Ken Hirunuma | 2004-07-06 |
| 6717754 | Lens-holding frame | Ken Hirunuma | 2004-04-06 |