Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4731970 | Shingled building panel | Thomas L. Marshall | 1988-03-22 |
| 4402169 | Surfacing for roof and siding structures of buildings | John K. Kough | 1983-09-06 |
| 4397129 | Resurfacing construction | John K. Kough | 1983-08-09 |
| 4355491 | Roof construction and method | John K. Kough | 1982-10-26 |