Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5361245 | Optical signal processing apparatus for detecting the direction of movement of an optical reading device relative to an optical disk | Takaharu Yoshida | 1994-11-01 |
| 5329509 | Optical disk unit | Tamane Takahara, Hideaki Osawa | 1994-07-12 |