Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4539663 | Disc playing system with continuous playing function | Masaya Ishibashi, Jun Kanda | 1985-09-03 |
| 4538253 | Disc playing system with continuous playing function | Masaya Ishibashi | 1985-08-27 |