Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5197094 | System for remotely crediting and billing usage of electronic entertainment machines | Michael L. Tillery, Eugene G. Harlan, John R. Martin, Samuel N. Zammuto | 1993-03-23 |
| 5116063 | Dart game with expanded scoring technique | Eugene G. Harlan, John R. Martin | 1992-05-26 |
| 5114155 | System for automatic collection and distribution of player statistics for electronic dart games | Michael L. Tillery, Eugene G. Harlan, John R. Martin, Samuel N. Zammuto | 1992-05-19 |