Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5121951 | Window frame design with correspoding window latch & vent sealing device | Allan Skjodt | 1992-06-16 |
| 5058321 | Pivoting & locking device for a window or door sash | Allan Skjodt | 1991-10-22 |
| 5044121 | Improved window and door structure | Allan Skjodt | 1991-09-03 |
| 4852312 | Window frame assembly | — | 1989-08-01 |
| 4581857 | Eaves troughing assembly | — | 1986-04-15 |