Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6166629 | Combination delay box with driver reaction time tester and tachometer and playback | Dwain C. May, Saverio Biondo | 2000-12-26 |
| 5600185 | Cross over delay apparatus | Dwain C. May | 1997-02-04 |