Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4899505 | Roof ventilator | Jerry Williamson | 1990-02-13 |
| D277502 | Roof edge ventilator | Jerry Williamson | 1985-02-05 |
| D277312 | Roof edge ventilator | Jerry Williamson | 1985-01-22 |
| D277229 | Roof ridge ventilator | Jerry Williamson | 1985-01-15 |
| D277230 | Roof ridge ventilator | Jerry Williamson | 1985-01-15 |