Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6971196 | Message sign | Mark Fernandez | 2005-12-06 |
| D341099 | Solar powered barricade light | — | 1993-11-09 |
| D341100 | Solar powered barricade light | John R. Bartholdson | 1993-11-09 |
| 4973190 | Barrel and barrel base | Dusan Krulj, Herbert Kramer | 1990-11-27 |
| 4859983 | Plastic barricade | Jack H. Kulp | 1989-08-22 |
| 4782783 | Traffic channelizer mountable vertical panel | Jack H. Kulp | 1988-11-08 |