Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5321675 | Pit spacing in the servo field of an optical disk for speed and direction detection and data retrieval | Osamu Ito, Masaharu Ogawa, Kyosuke Yoshimoto, Kunimaro Tanaka, Teruo Furukawa | 1994-06-14 |