Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822385 | Exhaust cleansing apparatus | Gerd W. Renno, Kirk A. Nelson, Stephen K. Melink | 1989-04-18 |
| 4541409 | Backshelf compensating exhaust hood apparatus | Daniel L. Karst, E. Richard Larsen | 1985-09-17 |