Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5772205 | System to detect inoperative switches in an amusement device | William Pfutzenreuter, Greg Topel | 1998-06-30 |
| 5494285 | Pinball playfield roller assembly | Christopher Shipman, Robert S. Morrison | 1996-02-27 |
| 5091677 | Lighting control system for pinball games | Charles R. Bleich, Lawrence E. DeMar | 1992-02-25 |
| 5074558 | Matrix address decoder for pinball games | Charles R. Bleich | 1991-12-24 |