Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6182400 | Folded ridge cover and method of fabrication | Mark Freiborg | 2001-02-06 |
| 6125602 | Asphalt composition ridge covers with three dimensional effect | Mark Freiborg | 2000-10-03 |