Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4662112 | Door frame and assembly method therefor | — | 1987-05-05 |
| 4644696 | Patio door assembly for removable astragal | — | 1987-02-24 |
| 4352258 | Adjustable sill and threshold | Jacob G. Doll | 1982-10-05 |
| 4241556 | Door light assembly | — | 1980-12-30 |