Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7258641 | Power divider lubrication in tandem drive axles | Michael Green, Gary Turner | 2007-08-21 |
| 5915693 | Jump rope play feature for a pinball game | Peter J. Piotrowski, Dwight Sullivan | 1999-06-29 |
| 5913516 | Multimode target with variable trajectory ball ramp | Peter J. Piotrowski, Dwight Sullivan | 1999-06-22 |