Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890435 | Window grille and retainer assembly | Steven R. Wilkening | 1990-01-02 |
| 4890438 | Insulated glass construction and method of making same | Thomas F. Tosa | 1990-01-02 |
| 4796400 | Skylight with improved seal | — | 1989-01-10 |