Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666776 | Laminated roofing shingle | Matti Kiik, William J. Schultz, Patrick T. Stapleton | 1997-09-16 |
| 5611186 | Laminated roofing shingle | — | 1997-03-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666776 | Laminated roofing shingle | Matti Kiik, William J. Schultz, Patrick T. Stapleton | 1997-09-16 |
| 5611186 | Laminated roofing shingle | — | 1997-03-18 |