Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364106 | Card mark sensor and methods for blackjack | Donald J. Laughlin | 1994-11-15 |
| 5224712 | Card mark sensor and methods for blackjack | Donald J. Laughlin | 1993-07-06 |
| 5219172 | Playing card marks and card mark sensor for blackjack | Donald J. Laughlin | 1993-06-15 |