Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845807 | Flashing bracket | — | 1989-07-11 |
| 4845830 | Method of assembling a window operator | Douglas A. Nolte | 1989-07-11 |
| 4843703 | Method of assembling a window operator | Douglas A. Nolte, Christopher T. Sandberg | 1989-07-04 |