Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4531337 | Door casement | — | 1985-07-30 |
| RE31536 | Metal cladded window products | Douglas E. Justice | 1984-03-13 |
| 4207707 | Metal cladded window products | Douglas E. Justice | 1980-06-17 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4531337 | Door casement | — | 1985-07-30 |
| RE31536 | Metal cladded window products | Douglas E. Justice | 1984-03-13 |
| 4207707 | Metal cladded window products | Douglas E. Justice | 1980-06-17 |