Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6618126 | Surveying instrument having a sighting telescope and a phase-difference detection type focus detection device therefor | Masami Shirai, Takayuki Ito | 2003-09-09 |
| 6603610 | Wide-angle lens system | Takayuki Ito | 2003-08-05 |
| 6560042 | Wide-angle lens system and a focusing method thereof | Takayuki Ito | 2003-05-06 |