Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10538919 | Spaced vent for metal roofs | Carl Zimmerman | 2020-01-21 |
| 10000930 | Spaced vent for metal roofs | Carl Zimmerman | 2018-06-19 |
| 9353962 | Roof vent | Mark J. Keller | 2016-05-31 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10538919 | Spaced vent for metal roofs | Carl Zimmerman | 2020-01-21 |
| 10000930 | Spaced vent for metal roofs | Carl Zimmerman | 2018-06-19 |
| 9353962 | Roof vent | Mark J. Keller | 2016-05-31 |