Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6611383 | Optical pickup apparatus having wedge-shaped beam splitter(s) | — | 2003-08-26 |
| 4779094 | Apparatus for remotely determining the angular orientation, speed and/or direction of rotary objects | Doo-Seop Lee, Chae Taek Lim, Dong-Won Choi | 1988-10-18 |