Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D884143 | Roof vent | Robert B. Holland, Grayson M. Griffin | 2020-05-12 |
| 10584496 | Roof ridge vent and associated method | Robert B. Holland, Grayson M. Griffin | 2020-03-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D884143 | Roof vent | Robert B. Holland, Grayson M. Griffin | 2020-05-12 |
| 10584496 | Roof ridge vent and associated method | Robert B. Holland, Grayson M. Griffin | 2020-03-10 |