Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6690291 | Vehicle hazard warning system | Donald L. McAlpine | 2004-02-10 |
| 6080963 | Toaster oven with automatic feed | Donald M. Lawrence | 2000-06-27 |
| 5959551 | Emergency vehicle approach warning system | — | 1999-09-28 |
| 5917408 | Maintenance alert cluster with memory | Peter Michael Doerr | 1999-06-29 |
| 5839354 | Revolving toaster apparatus | — | 1998-11-24 |
| 5623247 | Maintenance alert cluster | — | 1997-04-22 |