Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6804180 | Optical head assembly and optical information recording/reproducing device | — | 2004-10-12 |
| 6788628 | Optical head and optical data recording/reproducing apparatus using the same | — | 2004-09-07 |
| 6707773 | Optical head and optical information recording and playback apparatus | — | 2004-03-16 |