Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4633458 | Disc-shaped, optically-readable information carrier having a protective edge and/or center part | — | 1986-12-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4633458 | Disc-shaped, optically-readable information carrier having a protective edge and/or center part | — | 1986-12-30 |