Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5873187 | Spherodized fluorescent beads for improved roadway pavement marker visibility | Craig S. Bartholomew | 1999-02-23 |
| 5660497 | Spherodized fluorescent beads for improved roadway pavement marker visibility | Craig S. Bartholomew | 1997-08-26 |
| 5516227 | Spherodized fluorescent beads for improved roadway pavement marker visibility | Craig S. Bartholomew | 1996-05-14 |