Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4652998 | Video gaming system with pool prize structures | John R. Koza, Martin A. Keane | 1987-03-24 |
| 4582324 | Illusion of skill game machine for a gaming system | John R. Koza, Martin A. Keane | 1986-04-15 |