Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6074450 | Air filter assembly | — | 2000-06-13 |
| 5512074 | Air filter assembly | Robert S. Hanni, Henry H. S. Yu | 1996-04-30 |
| 4865636 | Interlocking wedge for pleated paper filter element | — | 1989-09-12 |