Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1058676 | Mathematical colored-numbered puzzle double board game | — | 2025-01-21 |
| D1058677 | Mathematical colored-numbered puzzle one board game | — | 2025-01-21 |
| 11857884 | Mechanical-mathematical diagonal number board game | — | 2024-01-02 |
| 6585585 | Mathematical puzzle game system and method | — | 2003-07-01 |
| 4920333 | Internal pilferage alarm | Robert Barr | 1990-04-24 |