Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683746 | Patterned pavement markings with upright retroreflectors | T. Ian Bradshaw | 1997-11-04 |
| 5676488 | Pavement marking with multiple topcoats | — | 1997-10-14 |
| 5670227 | Patterned pavement markings with upright retroreflectors | T. Ian Bradshaw | 1997-09-23 |
| 5593246 | Patterned chalk-resistant pavement marking and method of making | Kathleen A. Hachey, Robert L. Keech | 1997-01-14 |