Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6836347 | Viewing optical system and image pickup optical system and apparatus using the same | Tetsuhide Takeyama, Masachika Watanabe | 2004-12-28 |
| 6687029 | Viewing optical system and image pickup optical system and apparatus using the same | Tetsuhide Takeyama, Masachika Watanabe | 2004-02-03 |