Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090168 | Extruded window frame system | William Fast, Jr. | 1992-02-25 |
| 5083501 | Ventilation window unit | Grenville K. Yuill, Gordon M. Comeau | 1992-01-28 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090168 | Extruded window frame system | William Fast, Jr. | 1992-02-25 |
| 5083501 | Ventilation window unit | Grenville K. Yuill, Gordon M. Comeau | 1992-01-28 |