Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12344091 | Interlock system for a vehicle | Kirk D. Hanna, Derek Hanna, Michael C. Shultis | 2025-07-01 |
| 8359901 | Chemical impairment detection system and method of use to reduce circumvention | Richard C. Freund, Thomas E. Knowles, Mitchell K. Neeld, Sherman Couch | 2013-01-29 |