Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6679020 | Multi-layered shingle and method of making same | Keith Rooks, Shelby L. Freeman | 2004-01-20 |
| 6679308 | Multi-layered shingle and method of making same | Keith Rooks, Shelby L. Freeman | 2004-01-20 |