Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6290885 | Method of making a fiber-reinforced molded plastic roofing unit | Joseph C. Roetheli, D. Kevin Pratt, Robert Joseph Alexander | 2001-09-18 |
| 6164034 | Fiber-reinforced molded plastic roofing unit and method of making the same | Joseph C. Roetheli, D. Kevin Pratt, Robert Joseph Alexander | 2000-12-26 |