Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9890965 | Roof ridge vent and ventilated roof employing same | Robert B. Holland | 2018-02-13 |
| 8790167 | Roof ridge vent and ventilated roof employing same | Robert B. Holland | 2014-07-29 |
| D654161 | Roof vent and sealing element therefor | Robert B. Holland | 2012-02-14 |