Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8291656 | Retention assembly for retaining a panel in a window or a door | Peter Gunther | 2012-10-23 |
| 7752816 | Retention assembly for retaining a panel in a window or a door | Peter Gunther | 2010-07-13 |
| 5657590 | Muntin bar assembly | Rodney J. Digman, Clemith E. Sorey | 1997-08-19 |