Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867640 | Exhaust fan for bathrooms and the like | David W. Wolbrink, Kenneth J. Jonas, Thomas A. Kuhnke | 1989-09-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867640 | Exhaust fan for bathrooms and the like | David W. Wolbrink, Kenneth J. Jonas, Thomas A. Kuhnke | 1989-09-19 |