Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9417109 | Chassis assembly | Donald P. Dolifka, Gerald J. Davis | 2016-08-16 |
| 8511349 | Chassis assembly | Donald P. Dolifka, Gerald J. Davis | 2013-08-20 |
| 8156968 | Chassis assembly | Donald P. Dolifka, Gerald J. Davis | 2012-04-17 |