Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6808785 | Synthetic roofing shingle or tile | Michael Friedman, Joong Youn Kim, Thomas Kevin MacKinnon | 2004-10-26 |
| 6758019 | Shingle with improved blow-off resistance | Robert L. Jenkins, Stephen A. Koch | 2004-07-06 |