Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4307552 | Synthetic roofing elements of the slate type and a method of manufacturing same | — | 1981-12-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4307552 | Synthetic roofing elements of the slate type and a method of manufacturing same | — | 1981-12-29 |