Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5772205 | System to detect inoperative switches in an amusement device | Mark J. Coldebella, William Pfutzenreuter | 1998-06-30 |
| 5075604 | Variable resistance switch | Fred Crook, Gary D. Meyer | 1991-12-24 |