Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6129353 | Method of displaying video images projected from a video display of a pinball machine | Lawrence E. DeMar, Louis N. Koziarz, Peter J. Piotrowski | 2000-10-10 |
| 5741010 | Trap door providing for interlevel ball travel for pinball game | — | 1998-04-21 |