Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6561120 | Plastic barricade assembly | Geoffrey M. Glass, Douglas C. Madsen | 2003-05-13 |
| 6101967 | Plastic barricade assembly | Geoffrey M. Glass, Douglas C. Madsen | 2000-08-15 |
| 5570972 | Traffic barricade and flasher light assembly with combination flasher light mounting apparatus and carrying handle | Geoffrey M. Glass, Douglas C. Madsen | 1996-11-05 |