Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6039637 | Security device for destroying the information bearing layer and data of a compact disc | Roger S. Hutchison | 2000-03-21 |
| 5954569 | Security device for removing the information bearing layer and data of a compact disc | Roger S. Hutchison, Philip Teo Chwee Lock | 1999-09-21 |