Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5052286 | Roof ridge ventilator | Robert A. Tubbesing | 1991-10-01 |
| 4957037 | Roof ridge ventilator | Robert A. Tubbesing | 1990-09-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5052286 | Roof ridge ventilator | Robert A. Tubbesing | 1991-10-01 |
| 4957037 | Roof ridge ventilator | Robert A. Tubbesing | 1990-09-18 |