Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4637446 | Building and bi-fold door assembly | Lynn O. Twedt, Edwin H. Thurnau | 1987-01-20 |
| 4448232 | Bi-fold door assembly | Lynn O. Twedt | 1984-05-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4637446 | Building and bi-fold door assembly | Lynn O. Twedt, Edwin H. Thurnau | 1987-01-20 |
| 4448232 | Bi-fold door assembly | Lynn O. Twedt | 1984-05-15 |